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Nektar Therapeutics

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FY2008 Annual Report · Nektar Therapeutics
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AnnuAl RepoRt 2008

Innovative Science.
Transformative Medicine.

Nektar  is  addressing  unmet  medical  needs  by  leveraging  and  expanding  our  technology 

platform  to  improve  known  molecules.  Nektar’s  advanced  polymer  conjugate  technology 

platform has broad applicability to both large and small molecules which enables us to create 

drug candidates across multiple therapeutic areas. 

To oUR SHAReHoLDeRS

This past year was one of transformation and great 

progress at Nektar. We set a new path forward for our 

company that focuses squarely on developing innovative 

drugs with our advanced polymer conjugate technology 

platform. With the elements in place at Nektar today — 

a validated technology platform, a deep pipeline of highly 

promising products, and a dominant intellectual property 

estate — we are well-positioned to become one of the 

most exciting companies in the biotechnology industry.

Recent impressive data from the Phase 2 study of our 

proprietary compound, NKTR-118, provides the fi rst 

clinical validation of Nektar’s technology platform in oral 

small molecule drugs. NKTR-118 is a novel peripheral 

opioid antagonist designed to treat opioid-induced 

constipation (OIC) without reversing analgesia. The 

highly statistically signifi cant results from our Phase 2 

placebo-controlled trial demonstrated that NKTR-118 

restored near normal bowel function in patients on 

chronic opioid therapy without diminishing their pain 

relief. OIC is a large and underserved patient population 

with no approved oral therapies. Based on our positive 

experience with NKTR-118, we initiated development 

of NKTR-119, a combination of a long-acting opiate 

and NKTR-118. NKTR-119 is an important new product 

concept, a potent, oral, long-acting analgesic without 

serious GI side effects. We intend to start Phase 2 

proof-of-concept studies with NKTR-119 in the second 

half of 2009.

The data for NKTR-118 highlight how our advanced 

polymer conjugate technology can create new small 

molecule drug candidates with optimized physicochem-

ical and pharmacological properties. Nektar is already 

well-recognized as the industry leader in large molecule 

PEGylation and the validation of our platform with small 

molecules represents a major advance in pharmaceutical 

HoWARD W. RoBIn

President and Chief Executive Offi cer

drug development. Importantly, NKTR-118 demonstrates 

RNA interference-based therapies to substantially 

that our technology has the potential to do three things: 

improve the product profi le and enable this potential 

fi rst, signifi cantly improve the pharmacological activity of 

new class of therapeutics.

small molecule drugs; second, enable the creation of 

novel, orally bioavailable therapeutics; and third, enable 

preferential distribution of a drug within the body. Our 

success with NKTR-118 sets the stage for the future 

growth of our pipeline across multiple therapeutic 

modalities in a wide range of disease areas. 

At the end of 2008, we strengthened our cash 

position with the sale of non-strategic pulmonary 

delivery assets to Novartis for $115 million. The sale 

allowed us to shed assets that had little value to 

Nektar while retaining the future revenue potential 

of Amikacin Inhale and Cipro Inhale, both partnered 

We advanced two other key proprietary programs in 

with Bayer. We took advantage of the instability in 

clinical development in 2008 — NKTR-102 and NKTR-

the credit markets in the fourth quarter of 2008 and 

105. These product candidates clearly illustrate how 

repurchased $100 million of our debt at an average 

Nektar’s technology platform can be used to optimize 

price of 48 cents on the dollar. During these challeng-

the pharmacokinetics of important chemotherapeutic 

ing economic times, Nektar successfully navigated a 

agents to potentially improve their effi cacy. Clinical trials 

strategic transition, placing the company in a position 

of NKTR-102, PEGylated irinotecan, demonstrated highly 

of unique fi nancial strength within our industry.

promising activity in cancer patients. Our early success 

with this molecule gave us the confi dence to advance 

NKTR-102 into expanded Phase 2 clinical development 

programs in ovarian, breast and colorectal cancers. We 

expect preliminary data from the ovarian and breast 

studies by the end of 2009. NKTR-105, PEGylated 

docetaxel, is the next promising oncology drug candidate 

in our pipeline. In preclinical studies, NKTR-105 signifi -

cantly inhibited tumor growth compared to docetaxel. 

Unlike docetaxel, NKTR-105 was not associated with 

neutropenia and did not require pre-treatment with 

steroids. We recently initiated a Phase 1 study to 

evaluate NKTR-105 in cancer patients with refractory 

tumors and expect results by the end of the year. 

Our company has three elements that differentiate us 

from many other biotechnology companies — a proven 

and validated drug development platform, a technology 

that is broadly applicable to both large and small 

molecules, and a strategy that focuses on substantially 

improving well-characterized or approved molecules. 

These three components enable us to potentially create 

a lower risk R&D pipeline, improving the speed and 

costs of research when compared to traditional drug 

discovery companies. As a platform technology 

company, we remain focused on working with partners 

to accelerate and fund later stages of clinical develop-

ment while retaining signifi cant economic ownership 

in our proprietary programs. This strategy provides 

In 2008, we identifi ed a number of new research and 

Nektar with the fi nancial fl exibility to pursue the many 

preclinical programs that we believe hold signifi cant 

product opportunities emanating from our validated 

promise. NKTR-140, our protease inhibitor candidate in 

technology platform. 

preclinical development, is a highly-potent oral thera-

peutic for HIV that does not require boosting with 

another protease inhibitor, a potentially major advance 

for this class of drugs. NKTR-171 is a new program in 

neuropathic pain advancing through preclinical studies. 

Many current treatments for neuropathic pain have 

signifi cant side effect profi les as a result of CNS-

mediated mechanisms. By using our advanced polymer 

conjugate technology to exclude molecules from 

crossing the blood-brain barrier, we may be able to 

treat neuropathic pain without CNS side effects. We are 

also exploring the use of our technology platform with 

1  >

I am exceptionally proud of our employees and their 

achievements over this past year, and I am excited 

about the opportunities that lie ahead for our company 

in 2009 and beyond. Thank you for your ongoing 

support and I look forward to sharing our continued 

progress with you.

Sincerely,

HoWARD W. RoBIn

President and Chief Executive Offi cer

|    N E K TA R |    A N N U A L   R E P O R T

|    2 0 0 8

|    I N N O V A T I V E   S C I E N C E .   T R A N S F O R M A T I V E   M E D I C I N E .

NEKTAR’S RESEARCH AND DEVELOPMENT TEAM HAS CREATED 

A DEEP AND DIVERSE PORTFOLIO OF PRODUCT CANDIDATES IN 

VARIOUS STAGES OF CLINICAL DEVELOPMENT.

neKTAR ReSeARCH & 
DeVeLopMenT pIpeLIne

Product & Indication

Phase of Development

R E S EAR C H & 
P R E C LI N I CAL 

P H 1

P H  2

P H  3

TIMoTHY A. RILeY, pH.D.

Senior Vice President, Global Research

“When we design a new drug candidate, we combine 

our knowledge of a drug with our understanding 

of medicinal polymer chemistry and the body’s 

mechanisms. This allows us to turn a sub-optimal 

drug into a new chemical entity with the potential 

to be more effi cacious with more desirable 

characteristics.”

LoRIAnne K. MASUoKA, M.D.

Vice President, Clinical Development

“Since our clinical pipeline contains innovative 

drug candidates designed to improve upon known 

drugs or leverage well-characterized drug targets, 

we are able to achieve clinically-meaningful 

proof-of concept very early in development. As a 

result, we can enter later stages of development 

with a high level of confi dence that we are 

pursuing investigational products with the most 

compelling therapeutic profi les.”

nKTR-061 (Amikacin Inhale) Partnered with 
Bayer/Gram-negative Pneumonias

oRAL nKTR-118 
Opioid-Induced Bowel Dysfunction

nKTR-102
Metastatic Breast Cancer

nKTR-102
Platinum-Resistant Ovarian Cancer

nKTR-102 Second-line Colorectal Cancer 
Patients with KRAS Mutation

nKTR-102
Metastatic Cervical Cancer

nKTR-063 (Inhaled Vancomycin) 
Gram-positive Pneumonias (MRSA)

nKTR-105
Solid Tumors

oral nKTR-119 
Analgesic combined with NKTR-118

nKTR-140 (Protease Inhibitor)
HIV

nKTR-171
Neuropathic Pain

nKTR-125  (Antihistamine)
Allergic Rhinitis

RnAi polymer Conjugates 
Multiple Indications

<  2

3  >

Phase 3 – product in large-scale clinical trials conducted to obtain regulatory approval to market and sell the drug (these trials are typically initiated following encouraging Phase 2 
results). Phase 2 – product in clinical trails to establish dosing and effi cacy in patients. Phase 1 – product in clinical trials, typically in healthy subjects, to test safety. In the case 
of oncology drug candidates, Phase 1 clinical trials are typically conducted in cancer patients. Research/preclinical – product is being studied in research by way of in vitro studies 
and/or animal studies.

|    N E K TA R |    A N N U A L   R E P O R T

|    2 0 0 8

|    I N N O V A T I V E   S C I E N C E .   T R A N S F O R M A T I V E   M E D I C I N E .

NEKTAR’S ADVANCED POLYMER CONJUGATE TECHNOLOGY 

PLATFORM HAS THE POTENTIAL TO SIGNIFICANTLY IMPROVE 

KNOWN MOLECULES AND CREATE DRUGS WITH HIGHLY DESIRABLE 

PHARMACOLOGIC PROPERTIES.

Nektar’s  pioneering  science  in  the  fi eld  of  polymer  conjugation  has  enabled  every  PEG-conjugated 

molecule approved over the past fourteen years. With our expertise in PEGylation, we have advanced our 

platform to apply to a broader range of molecules, both large and small, across many therapeutic areas. 

Many drugs have poor physico-chemical properties, toxicities and pharmacokinetics resulting in lower 

overall effi cacy and a less than optimal product profi le. With our technology, suboptimal drugs can be 

re-designed to achieve desired therapeutic and pharmacological properties and create an optimized and 

potentially superior therapeutic. Our technology can result in drugs with better effi cacy and solubility, 

chemical stability, greater oral bioavailability, and selective tissue targeting. 

n e KTAR ADVAn Ce D p oLYM e R C on J U GATe T e CH n oLoGY

Small Molecule 
polymer Conjugates

pro-Drug 
polymer Conjugates

Large Molecule 
polymer Conjugates

Cell 
Membrane

Drug

Nektar 
Polymer

Target
Receptor
Cell Surface

Through advanced medicinal 
chemistry, a polymer is conjugated 
with a small molecule drug in a 
stable linkage. The new oral drug 
can pass through certain cell 
membranes, such as the gut 
epithelial layer, to act on a target 
receptor on the cell surface. The 
drug can also be designed to have 
reduced transport across other 
specifi c barriers within the body.

Nektar 
Polymer

Drug
Released

Linker

With a pro-drug design, several 
drug molecules are attached to 
a large molecular weight polymer. 
The drug molecules are released at 
a customized rate to achieve a target 
product pharmacokinetic profi le.

Nektar 
Polymer

Linker

Protein

With an understanding of the 
structure-activity relationship of 
large molecules such as peptides, 
a polymer is designed and 
conjugated to the parent drug. 
The custom linkage allows for a 
programmed and complete release 
of the therapeutic to optimize its 
bioactivity and allow it to bind to 
a target receptor in its native state.

<  4

5  >

|    N E K TA R |    A N N U A L   R E P O R T

|    2 0 0 8

|    I N N O V A T I V E   S C I E N C E .   T R A N S F O R M A T I V E   M E D I C I N E .

NEKTAR IS CREATING INNOVATIVE ORAL SMALL MOLECULE DRUG 

CANDIDATES WITH OUR TECHNOLOGY PLATFORM, WITH A GOAL OF 

IMPROVING THERAPEUTIC ACTIVITY AND ENABLING PREFERENTIAL 

DISTRIBUTION OF A DRUG WITHIN THE BODY. 

Nektar’s  lead  clinical  proprietary  program,  oral  NKTR-118,  is  a  peripheral  opioid  antagonist  being 

developed as a potential treatment for opioid-induced constipation. In 2008, there were over 237 million 

prescriptions written for opioids in the U.S. and constipation has been shown to occur in up to 90% of 

patients on opioids.1 In a Phase 2 study of oral NKTR-118, patients on opioid therapy experienced a 

marked improvement in bowel function with an average increase of four spontaneous bowel movements 

per week during the fi rst week of treatment without reversal of analgesia. The Phase 2 results for NKTR-

118  further  validate  the  use  of  Nektar’s  advanced  polymer  conjugate  technology  platform  to  create 

innovative small molecule drugs.

oR AL n KTR-118

Met primary endpoint at two dose levels in Phase 2 randomized, placebo-controlled study
Treatment effect sustained over entire 28-day treatment period (P < 0.01)

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2.5

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P = NS

P < 0.01

P < 0.01

SBMs 5.8 
per week

Placebo first 
week of 
treatment

NKTR-118 
first week of 
treatment

SBMs 1.6 
per week

5 mg Oral
QD
N=72

25 mg Oral
QD
N=57

50 mg Oral
QD
N=79

Topline results of the Phase 2 trial for oral NKTR-118 were highly statistically signifi cant at two doses with a dose-
dependent increase in spontaneous bowel movements, or SBMs. The p value for the primary end point was less 
than 0.01 for all comparisons, while maintaining the analgesic effects of patients’ opioid therapy and demonstrating 
very favorable safety and tolerability profi les. Most frequent side effects were observed in the 50 mg dose and were 
diarrhea, nausea and abdominal cramping, which is expected for a drug targeting opioid bowel dysfunction.  

1 Sources: 2008 IMS Health; Kalso, 2004

<  6

7  >

 
 
 
 
 
|    N E K TA R |    A N N U A L   R E P O R T

|    2 0 0 8

|    I N N O V A T I V E   S C I E N C E .   T R A N S F O R M A T I V E   M E D I C I N E .

NEKTAR IS USING OUR ADVANCED POLYMER TECHNOLOGY PLATFORM 

TO IMPROVE THE PHARMACOKINETICS AND PHARMACODYNAMICS OF 

IMPORTANT CHEMOTHERAPEUTIC AGENTS.  

NKTR-102,  a  PEGylated  irinotecan,  is  our  fi rst  oncolytic  to  show  promising  therapeutic  activity  in 

humans.  Data  from  studies  of  NKTR-102  in  patients  demonstrated  signifi cant  antitumor  activity  in  a 

number of tumor types. In 2008, we advanced NKTR-102 into Phase 2 studies to evaluate NKTR-102 in 

platinum-resistant ovarian cancer, metastatic breast cancer and second-line colorectal cancer. We also 

have plans to conduct a Phase 2 trial of NKTR-102 in metastatic cervical cancer.  

NKTR-105, a PEGylated docetaxel, is in a Phase 1 trial in cancer patients with refractory solid tumors. As 

with NKTR-102, our technology could enable substantially improved pharmacodynamics that potentially 

enhance  therapeutic  effi cacy  of  this  widely-used  cancer  drug.  Based  on  our  early  clinical  evaluation, 

NKTR-105  also  may  not  require  pretreatment  with  corticosteroids,  which  would  provide  a  signifi cant 

advantage for this potential cancer therapy. 

Standard irinotecan dosing results in a half-life of approximately 47 hours for the active metabolite, SN38. The drug 
has a high initial maximum plasma concentration and can only be dosed once every three weeks leaving signifi cant 
periods of time between treatment cycles during which the tumor is not exposed to active drug.

I R I n oT e CA n

Standard irinotecan dosing provides limited exposure of active metabolite to tumors

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Tumor 
cells 
have no 
exposure 
to active 
drug and 
are con-
stantly 
dividing

No 
 exposure

No 
 exposure

No 
 exposure

0.1

0

3

6

9

12

Time (weeks)

Irinotecan Active
Metabolite
T1/2 ~ 47 hours
(Not detectable 
5-6 days 
following dose)

NKTR-102 demonstrates a potentially superior pharmacokinetics profile with an extended half life of the active 
metabolite, SN38, of over 50 days as opposed to only 47 hours with irinotecan. This results in sustained exposure of 
the tumor to the active metabolite and a lower initial maximum concentration (C-max). This pharmacokinetics profi le 
may improve effi cacy and allow more patients to receive optimal dosing. In a Phase I study, side effects of NKTR-102 
were similar to irinotecan and included diarrhea.

n KT R- 10 2

A superior pharmacokinetic profi le compared to irinotecan

blunted 
C-max

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Continuous exposure of drug to tumor cells

0.1

0

3

6

9

12

Time (weeks)

NKTR-102
Active Metabolite
T1/2 ~ 50 days

<  8

9  >

 
 
 
 
 
 
 
 
FORM 10-K

|    N E K TA R |    A N N U A L   R E P O R T

|    2 0 0 8

NEKTAR HAS BUILT A DOMINANT AND BROAD PATENT ESTATE 

COVERING OUR TECHNOLOGY PLATFORM ACROSS MANY 

THERAPEUTIC AREAS AND MODALITIES.

Technology 
Intellectual Property

Chemistry & 
Intellectual Property 
Delivery

Manufacturing 
Intellectual Property

Therapeutic 
Modalities and 
Molecules

Membrane 
exclusion

Linker
Chemistry

Manufacturing

Small Molecules

Increasing potency 
through e.g., 
PEGylation

Branched/Multi-arm 
architecture

Process 
development

Proteins / Peptides /
Antibody Fragments

Metabolism and 
bioavailability control

Attached 
chemistries

Scale-up

Nucleic Acids

Pro-drug 
releasable 
conjugation

Next Generation 
PEG and other 
polymer conjugates

Reducing 
immunogenicity

Small Molecules

Dominant IP position for 
polymer conjugation of 
small molecules

Hundreds of small 
molecules covered:
•  Oncolytics
•  Pain management and 
  Analgesics
•  Anti-depressants
•  Protease inhibitors
•  Antihistamines
•  Anti-virals
•  Antibiotics
•  Kinase inhibitors

Synthetic
approaches

Commercially 
validated 
manufacturing

Reagents

Conjugates

Proteins / Peptides / 
Antibody Fragments

Nucleic Acids

Polymer conjugate-based 
delivery of nucleic acids

Coverage includes:
•  siRNAs
•  dsRNA
•  microRNAs
•  shRNAs

Dominant IP position for 
polymer conjugation of 
large molecules

Hundreds of proteins, 
peptides, and other large 
molecules covered:
•  Glucocerebrosidase
•  Biphalin
•  Lysostaphin
•  GLP-1
•  GLP-2
•  GM-CSF
•  C-peptide
•  Kisspeptin
•  Protegrin
•  Metabolic peptides

<  10

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
WASHINGTON, DC 20549 
________________ 
FORM 10-K 
________________ 

FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO SECTIONS 13 OR 15(d) 
OF THE SECURITIES EXCHANGE ACT OF 1934 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

For the fiscal year ended December 31, 2008

or

TRANSITION REPORTS PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

(cid:53) 

(cid:133) 

Commission File Number: 0-24006 
________________ 
NEKTAR THERAPEUTICS 
(Exact name of registrant as specified in its charter) 
________________ 

Delaware 
(State or other jurisdiction of 
incorporation or organization) 

94-3134940 
(IRS Employer 
Identification No.) 

201 Industrial Road 
San Carlos, California 94070 
(Address of principal executive offices and zip code) 

650-631-3100 
(Registrant’s telephone number, including area code) 
________________ 

Securities registered pursuant to Section 12(b) of the Act: 

Title of Each Class 

Common Stock, $0.0001 par value 

Name of Each Exchange on Which Registered

NASDAQ Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes (cid:133) No (cid:53) 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes (cid:133) No (cid:53) 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the 
preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 
days) Yes (cid:53) No (cid:133) 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405) is not contained herein, and will not be contained, to 
the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 
10-K. (cid:53) 

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer,  or  a  smaller  reporting  company.  See  the 

definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer (cid:133) 

Accelerated filer (cid:53)

Non-accelerated filer (cid:133)
(Do not check if a smaller reporting company)

Smaller reporting company (cid:133)

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2) Yes (cid:133) No (cid:53) 

The approximate aggregate market value of voting stock held by non-affiliates of the registrant, based upon the last sale price of the registrant’s common stock on 
the last business day of the registrant’s most recently completed second fiscal quarter, June 30, 2008 (based upon the closing sale price of the registrant’s common stock 
listed  as  reported  on  the  NASDAQ  Global  Select  Market),  was  approximately  $300,233,348.  This  calculation  excludes  approximately  2,792,787  shares  held  by 
directors and executive officers of the registrant. Exclusion of these shares does not constitute a determination that each such person is an affiliate of the registrant. 

As of February 27, 2009, the number of outstanding shares of the registrant’s common stock was 92,506,054. 

DOCUMENTS INCORPORATED BY REFERENCE 

Portions of registrant’s definitive Proxy Statement to be filed for its 2009 Annual Meeting of Stockholders are incorporated by reference into Part III hereof. Such 
Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K. 

1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

2008 ANNUAL REPORT ON FORM 10-K 

TABLE OF CONTENTS 

PART I 

Item 1. Business 
Item 1A. Risk Factors 
Item 1B. Unresolved Staff Comments 
Item 2. Properties 
Item 3. Legal Proceedings 
Item 4. Submission of Matters to a Vote of Security Holders

PART II 

Item 5. Market for Registrant’s Common Equity Related Stockholder Matters and Issuer Purchases of Equity Securities
Item 6. Selected Financial Data 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations 
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 8. Financial Statements and Supplementary Data
Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure 
Item 9A. Controls and Procedures 
Item 9B. Other Information 

PART III 

Item 10. Directors, Executive Officers and Corporate Governance
Item 11. Executive Compensation 
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 
Item 13. Certain Relationships and Related Transactions and Director Independence
Item 14. Principal Accounting Fees and Services 

PART IV 

Item 15. Exhibits, Financial Statement Schedules 

Signatures 

Page

4
23
33
33
34
34

34
37
38
52
54
89
89
90

91
91
91
91
91

92
96

2 

 
 
 
 
 
Forward-Looking Statements 

This report includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended 
(the  “Securities  Act”),  and  Section 21E  of the  Securities  Exchange Act of 1934,  as  amended  (the  “Exchange Act”). All  statements 
other than statements of historical fact are “forward-looking statements” for purposes of this annual report on Form 10-K, including 
any  projections  of  earnings,  revenue  or  other  financial  items,  any  statements  of  the  plans  and  objectives  of  management  for  future 
operations  (including,  but  not  limited  to,  pre-clinical  development,  clinical  trials  and  manufacturing),  any  statements  concerning 
proposed drug candidates or other new products or services, any statements regarding future economic conditions or performance and 
any statements of assumptions underlying any of the foregoing. In some cases, forward-looking statements can be identified by the use 
of terminology such as “may,” “will,” “expects,” “plans,” “anticipates,” “estimates,” “potential” or “continue,” or the negative thereof 
or  other  comparable  terminology.  Although  we  believe  that  the  expectations  reflected  in  the  forward-looking  statements  contained 
herein are reasonable, such expectations or any of the forward-looking statements may prove to be incorrect and actual results could 
differ  materially  from  those  projected  or  assumed  in  the  forward-looking  statements.  Our  future  financial  condition  and  results  of 
operations, as well as any forward-looking statements, are subject to inherent risks and uncertainties, including, but not limited to, the 
risk factors set forth in Part I, Item 1A “Risk Factors” below and for the reasons described elsewhere in this annual report on Form 10-
K. All forward-looking statements and reasons why results may differ included in this report are made as of the date hereof and we do 
not  intend  to update  any forward-looking  statements  except  as required by  law  or  applicable  regulations.  Except where  the  context 
otherwise requires, in this annual report of Form 10-K, the “Company,” “Nektar,” “we,” “us,” and “our” refer to Nektar Therapeutics, 
a Delaware corporation, and, where appropriate, its subsidiaries. 

Trademarks 

The Nektar brand and product names, including but not limited to Nektar®, contained in this document are trademarks, registered 
trademarks  or  service  marks  of  Nektar  Therapeutics  in  the  United  States  (U.S.)  and  certain  other  countries.  This  document  also 
contains references to trademarks and service marks of other companies that are the property of their respective owners. 

3 

 
 
 
 
 
 
 
 
Item 1. Business 

PART I 

We  are  a  clinical-stage  biopharmaceutical  company  developing  a  pipeline  of  drug  candidates  that  utilize  our  PEGylation  and 
advanced  polymer  conjugate  technology  platforms,  which  are  designed  to  improve  the  benefits  of  drugs  for  patients.  Our  current 
proprietary  product  pipeline  is  comprised  of  drug  candidates  across  a  number  of  therapeutic  areas  including  oncology,  pain,  anti-
infectives,  anti-viral  and  immunology.  Our  research  and  development  activities  involve  small  molecule  drugs,  peptides  and  other 
potential biologic drug candidates. We create our innovative drug candidates by using our proprietary chemistry platform to modify 
the chemical structure of drugs using unique polymer conjugates. Polymer chemistry is a science focused on the synthesis or bonding 
of polymer architectures with drug molecules to alter the properties of the molecule when it is bonded with our proprietary polymers. 
Additionally,  we  may  utilize  established  pharmacologic  targets  to  engineer  a  new  drug  candidate  relying  on  a  combination  of  the 
known properties of these targets and our polymer chemistry technology and expertise. Our drug candidates are designed to improve 
the  pharmacokinetics,  pharmacodynamics,  half-life,  bioavailability,  metabolism  or  distribution  of  drugs  and  improve  the  overall 
benefits and use of a drug for the patient. Our objective is to apply our advanced polymer conjugate technology platform to create new 
drugs in multiple therapeutic areas. 

Each of our drug candidates which we are currently developing internally is a proprietary new chemical or biological entity that 
addresses large potential markets. We are developing drug candidates that can be delivered by oral or subcutaneous administration. 
Our most advanced proprietary product candidate, Oral NKTR-118, is a peripheral opioid antagonist that is currently being evaluated 
for the treatment of opioid-induced constipation (OIC) and we recently announced that we were terminating our Phase 2 clinical trial 
for  this  program  due  to  positive  preliminary  results.  Our  other  lead  product  candidate,  NKTR-102,  is  a  cytotoxic  topoisomerase  I 
inhibitor  that  is  being  evaluated  or  will  be  evaluated  in  four  separate  Phase  2  clinical  trials  for  the  treatment  of  multiple  cancers, 
including ovarian, breast, cervical and colorectal. 

In addition to our internal pipeline, we have a number of collaborations and license agreements for our technology with leading 
biotechnology and pharmaceutical companies, including Amgen, Schering-Plough, Baxter, UCB and Roche. A total of nine products 
using our PEGylation technology platform have received regulatory approval in the U.S. or Europe, and are currently marketed by our 
partners.  There  are  also  a  number  of  other  products  in  clinical  development  that  use  our  technology  platform.  These  licensing 
collaborations  will  represent  the  majority  of  our  revenue stream  in  2009  which  will  be  comprised  of  a  combination  of upfront  and 
contract research fees, milestones, manufacturing product sales and product royalties. 

We  also  have  a  significant  collaboration  with  Bayer  Healthcare  LLC  to  develop  BAY41-6551  (NKTR-061,  Amikacin  Inhale), 
which is an inhaled solution of amikacin, an aminoglycoside antibiotic. We originally developed the liquid aerosol inhalation platform 
and product and entered into a collaboration with Bayer Healthcare LLC in 2007 for its development. We have another proprietary 
product candidate, NKTR-063 (Inhaled Vancomycin), which uses the same aerosol platform as BAY41-6551. A Phase 1 clinical trial 
has been completed for NKTR-063 to treat patients with Gram-positive pneumonias. 

On  December  31,  2008,  we  completed  the  sale  and  transfer  of  certain  pulmonary  technology  rights,  certain  pulmonary 
collaboration agreements and approximately 140 of our dedicated pulmonary personnel and operations to Novartis Pharma AG. We 
retained  all  of  our  rights  to  BAY41-6551  and  NKTR-063,  certain  rights  to  receive  royalties  on  net  sales  of  the  Cipro  Inhale  (also 
known as Ciprofloxacin Inhaled Powder or CIP) program with Bayer Schering Pharma AG that we transferred to Novartis as part of 
the transaction, and we also retained certain intellectual property rights to patents specific to inhaled insulin. In connection with the 
closing of the transaction, we also terminated the Tobramycin Inhalation Powder (TIP) collaboration agreement with Novartis. 

We were incorporated in California in 1990 and reincorporated in Delaware in 1998. We maintain our executive offices at 201 

Industrial Road, San Carlos, California 94070, and our main telephone number is (650) 631-3100. 

Our Technology Platform 

With our expertise as a leader in the field of PEGylation, we have advanced our technology platform to include first-generation 
PEGylation and new advanced polymer conjugate chemistries that can be tailored in very specific and customized ways to optimize 
and significantly improve the profile of a wide range of molecules and many classes of drugs and disease areas. 

4 

 
 
 
 
 
 
 
 
 
 
 
 
PEGylation  has  been  a  highly  effective  technology  platform  for  the  development  of  therapeutics  with  significant  commercial 
success, such as Roche’s PEGASYS® (PEG-interferon alfa-2a) and Amgen’s Neulasta® (pegfilgrastim). All of the PEGylated drugs 
approved  over  the  last  fourteen  years  were  enabled  with  our  PEGylation  technology  through  our  collaborations  and  licensing 
partnerships with pharmaceutical companies. PEG (polyethylene glycol) is a versatile technology and is a water soluble, amphiphilic, 
non-toxic, non-immunogenic compound that is safely cleared from the body. Its primary use to date has been in currently approved 
biologic drugs to favorably alter their pharmacokinetic or pharmacodynamic properties. However, in spite of its widespread success in 
commercial drugs, there are limitations with the first-generation PEGylation approaches used with biologics. These limitations include 
the  inability  of  the  earlier  approaches  of  PEGylation  technology  to  be  used  successfully  with  small  molecule  drugs,  antibody 
fragments and peptides, all of which could potentially benefit from the application of the technology. Other limitations of the early 
approaches of PEGylation technology include resulting sub-optimal bioavailability and bioactivity, and its limited ability to be used to 
fine-tune properties of the drug, as well as its inability to be used to create oral drugs. 

With our expertise and proprietary technology in PEGylation, we have created the next-generation of PEGylation technology. Our 
advanced  polymer  conjugate  technology  platform  is  designed  to  overcome  the  limitations  of  the  first  generation  of  the  technology 
platform and allow the platform to be utilized with a broader range of molecules across many therapeutic areas. 

Both  our  PEGylation  and  advanced  polymer  conjugate  technology  platforms  have  the  potential  to  offer  one  or  more  of  the 

following benefits: 

• 

• 

improve efficacy or safety in certain instances as a result of better pharmacokinetics, pharmacodynamics, longer half-life and 
sustained exposure of the drug; 

improve targeting or binding affinity of a drug to its target receptors with the potential to improve efficacy and reduce toxicity 
or drug resistance; 

•  enable  oral  administration  of  parenterally-administered  drugs,  or  drugs  that  must  be  administered  intravenously  or 

subcutaneously, and increase oral bioavailability of small molecules; 

•  prevent drugs from crossing the blood-brain barrier and limiting undesirable central nervous system effects; 

• 

• 

reduce first-pass metabolism effects of certain drug classes with the potential to improve efficacy, which could reduce the need 
for other medicines and reduce toxicity; 

reduce rate of drug absorption and of elimination or metabolism by improving stability of the drug in the body and providing it 
with more sufficient time to act on its target; and 

• 

reduce immune response to certain macromolecules with the potential to prolong their effectiveness with repeated doses. 

We  have  a  broad  range  of  approaches  that  we  may  use  when  designing  our  own  drug  candidates,  some  of  which  are  outlined 

below: 

Small Molecule Polymer Conjugates 

Our  customized  approaches  with  small  molecule  polymer  conjugates  allows  for  the  fine-tuning  of  the  physicochemical  and 
pharmacological properties of small molecule oral drugs to potentially increase their therapeutic benefit. In addition, this approach can 
enable  oral  administration  of  subcutaneously-delivered  small  molecule  drugs  that  have  shown  low  bioavailability  when  delivered 
orally.  Benefits  of  this  approach  can  also  include:  improved  potency,  increased  oral  bioavailability,  modified  biodistribution  with 
enhanced pharmacodynamics, and reduced transport across specific membrane barriers in the body, such as the blood-brain barrier. A 
primary example of the application of membrane transport inhibition, specifically reducing transport across the blood-brain barrier is 
Oral NKTR-118, a novel peripheral opioid antagonist that is in the final stages of Phase 2 clinical development. An example of a drug 
candidate that uses this approach to avoid first-pass metabolism is NKTR-140, a novel protease inhibitor in preclinical development. 

5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Small Molecule Pro-Drug Conjugates 

The  pro-drug  polymer  conjugation  approach  can  be  used  to  optimize  the  pharmacokinetics  and  pharmacodynamics  of  a  small 
molecule drug to substantially increase both its efficacy and side effect profile. We are currently using this platform with oncolytics, 
which  typically  have  sub-optimal  half-lives  that  can  limit  their  therapeutic  efficacy. With  our  technology  platform,  we  believe  that 
these  drugs  can  be  modulated  for  programmed  release  within  the  body,  optimized  bioactivity  and  increased  sustained  exposure  of 
active drug to tumor cells in the body. We are using this approach with the two oncolytic candidates in our pipeline, NKTR-102, a 
novel PEGylated form of irinotecan in Phase 2 clinical development, and NKTR-105, a novel PEGylated form of docetaxel in Phase 1 
clinical development. 

Peptide Large Molecule Polymer Conjugates 

Our customized approaches with large molecule polymer conjugates have enabled numerous successful PEGylated biologics on 
the  market  today. We  are using our  advanced  polymer  conjugation  technology-based approach  to  enable  peptides, which  are  much 
smaller in size than other biologics, such as proteins and antibody fragments. We are in the early stages of research with a number of 
peptides that utilize this proprietary approach. Peptides are important in modulating many physiological processes in the body. Some 
of the benefits of working with peptides are: they are small,  more easily optimized, and can be rapidly investigated for therapeutic 
potential.  However,  peptide  drug  discovery  has  been  slowed  by  the  extremely  short  half-life  and  limited  bioavailability  of  these 
molecules. 

Based on our knowledge of the technology and biologics, our scientists have designed a novel hydrolyzable linker that can be used 
to optimize the bioactivity of a peptide. Through rational drug design and the use of our approach, a peptide’s pharmacokinetics and 
pharmacodynamics can be substantially improved and its half-life can be significantly extended. The approach can also be used with 
proteins and larger molecules, as well. 

Antibody Fragment Conjugates 

This approach uses a large molecular weight polyethylene glycol (PEG) conjugated to antibody fragments in order to potentially 
improve their toxicity profile, extend their half-life and allow for ease of synthesis with the antibody. The specially designed PEG then 
becomes  part  of  the  antibody  fragment  Fc.  Since  the  antibody  fragment  is  more  like  a  biologic,  this  conjugation  has  a  branched 
architecture with either stable or degradable linkage. This approach can be used to reduce antigenicity, reduce glomerular filtration 
rate,  and  retain  antigen-binding  affinity  and  recognition.  There  is  currently  one  approved  product  on  the  market  that  utilizes  our 
technology  with  an  antibody  fragment,  CIMZIA™  (certoluzimab  pegol),  which  was  developed  by  our  partner  UCB  Pharma  and  is 
approved for the treatment of Crohn’s Disease in the U.S. 

Our Strategy 

The key elements of our business strategy are outlined below:  

Advance  Our  Internal  Clinical  Pipeline  of  Drug  Candidates  that  Leverage  Our  PEGylation  and  Advanced  Polymer  Conjugate 

Chemistry Platform 

Our objective is to create value by advancing our lead drug candidates through early to mid-stage clinical development. To support 
this strategy, in 2008, we significantly expanded our strong internal expertise in our clinical development and regulatory departments. 
We intend to decide on a product-by-product basis whether we wish to continue development into Phase 3 pivotal clinical trials and 
commercialize products on our own, or seek a partner, or pursue a combination of these approaches. 

A  key  component  of  our  development  strategy  is  to  potentially  reduce  the  risks  and  time  associated  with  drug  development  by 
capitalizing on the known safety and efficacy of approved drugs as well as established pharmacologic targets and drugs directed to 
those targets. For many of our novel drug candidates, we may seek approval in indications for which the parent drugs have not been 
studied or approved. We believe that the improved characteristics of our drug candidates will provide meaningful benefit to patients 
compared to the existing therapies, and allow for approval to provide new treatments for patients for which the parent drugs are not 
currently approved. 

6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Ensure Future Growth of our Pipeline through Internal Research Efforts and Advancement of our Preclinical Drug Candidates 

into Clinical Trials 

We believe it is important to maintain a diverse pipeline of new drug candidates to continue to build on the value of our business. 
Our early research organization is identifying new drug candidates by applying our technology platform to a wide range of molecule 
classes,  including  small  molecules  and  large  proteins,  peptides  and  antibodies,  across  multiple  therapeutic  areas.  We  continue  to 
advance  our  most  promising  early  research  drug  candidates  into  preclinical  development  with  the  objective  to  advance  these  early 
stage research programs to human clinical studies over the next several years. 

Enter into Strategic and High-Value Partnerships to Bring Our Drugs to Market 

Our  partnering  strategy  is  to  enter  into  collaborations  with  larger  pharmaceutical  and  biotechnology  companies  at  appropriate 
stages in our drug development process to fund further clinical development, manage the global regulatory filing process, and market 
and sell the approved drugs. The options for future collaboration arrangements range from comprehensive licensing arrangements to 
co-promotion  and  co-development  agreements  with  the  structure  of  the  collaboration  depending  on  factors  such  as  the  cost  and 
complexity of development, marketing and commercialization needs and therapeutic area focus. 

Continue  to  Build  a  Leading  Intellectual  Property  Estate  in  the  Field  of  PEGylation  and  Polymer  Conjugate  Chemistry  across 

Therapeutic Modalities 

We are committed to continuing to build on our intellectual property position in the field of PEGylation and polymer conjugate 
chemistry.  To  that  end,  we  have  a  comprehensive  patent  strategy  providing  us  with  ownership  of  patents  and  patent  applications 
covering  a  wide  range  of  approaches,  including,  among  others,  polymer  materials,  conjugates,  formulations,  synthesis,  therapeutic 
areas and methods of treatment. 

Approved Drugs and Drug Candidates Enabled By Our Technology through Licensing Collaborations 

The following table outlines our collaborations with a number of pharmaceutical companies that license our technology, including 
Amgen, Schering-Plough, Baxter, UCB and F. Hoffmann-La Roche. A total of nine products using our PEGylation technology have 
received regulatory approval in the U.S. or Europe. There are also a number of other candidates that have been filed for approval or 
are in various stages of clinical development. These collaborations generally contain several elements including license rights to our 
proprietary  technology,  manufacturing  and  supply  agreements  under  which  we  may  receive  manufacturing  revenue,  milestone 
payments, and/or product royalties on commercial sales. 

Drug 
Neulasta® (pegfilgrastim) 
PEGASYS® (peginterferon alfa-2a) 
Somavert® (pegvisomant) 
PEG-INTRON® (peginterferon alfa-2b) 
Macugen® (pegaptanib sodium injection)  Age-related macular

Neutropenia
Hepatitis-C
Acromegaly
Hepatitis-C

Primary or Target
Indications

CIMZIA™ (certolizumab pegol) 

MIRCERA® (C.E.R.A.) (Continuous 
Erythropoietin Receptor Activator) 

CIMZIA™ (certolizumab pegol) 
Hematide™ (synthetic peptide-based, 
erythropoiesis- stimulating agent) 

MAP0004™ 
Cipro Inhale 
CIMZIA ™ (certoluzimab pegol) 
CDP-791 (PEG-antibody fragment 

angiogenesis inhibitor) 

degeneration
Crohn’s disease

Anemia associated with chronic
kidney disease in patients on 
dialysis and patients not on 
dialysis 
Rheumatoid arthritis
Anemia

Migraine
Cystic fibrosis lung infections
Psoriasis
Non-small cell lung cancer

Licensing Partner 
and Drug Marketer 

Status(1)

Amgen Inc.
Approved
F. Hoffmann-La Roche Ltd  Approved
Approved
Pfizer Inc.
Schering-Plough Corporation  Approved
Approved
OSI Pharmaceuticals 
(formerly Eyetech)
UCB Pharma

Approved in U.S. and
Switzerland

F. Hoffmann-La Roche Ltd  Approved in U.S. and
EU (Launched only in 
the EU)* 

UCB Pharma
Affymax, Inc.

Filed in the U.S. and EU
Phase 3

MAP Pharmaceuticals 
Bayer Schering Pharma AG  Phase 2**
UCB Pharma
UCB Pharma

Phase 2
Phase 2

Phase 3

Longer-acting Factor VIII and other 

Hemophilia

Baxter

Preclinical

blood clotting proteins 

7 

 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
(1)  Status definitions are:  

Approved—regulatory approval to market and sell product obtained in the U.S., EU and other countries. 

Filed —Products for which a New Drug Application (NDA) or Biologics License Application (BLA) has been filed 

Phase 3 or Pivotal—product in large-scale clinical trials conducted to obtain regulatory approval to market and sell the drug (these 
trials are typically initiated following encouraging Phase 2 trial results). 

Phase 2—product in clinical trials to establish dosing and efficacy in patients. 

Phase  1—product  in  clinical  trials,  typically  in  healthy  subjects,  to  test  safety.  In  the  case  of  oncology  drug  candidates,  Phase  1 
clinical trials are typically conducted in cancer patients. 

Research/preclinical—product is being studied in research by way of vitro studies and/or animal studies 

*  Amgen Inc. prevailed in a patent lawsuit against F. Hoffmann-La Roche Ltd and as a result of this legal ruling Roche is currently 

prevented from marketing MIRCERA® in the U.S. 

**  This product candidate was developed using our proprietary pulmonary delivery technology that was transferred to Novartis in an 
asset sale transaction that closed on December 31, 2008. As part of the transaction, Novartis assumed our rights and obligations for 
our Cipro Inhale agreements with Bayer Schering PharmaAG; however, we maintained the rights to receive certain royalties on 
commercial sales of Cipro Inhale if the product candidate is approved. 

Nektar Proprietary Internal Drug Candidates in Clinical Development 

The following table summarizes our proprietary product development pipeline and significant partnerships. The table includes the 

type of molecule or drug, the primary indication for the product or product candidate, and the clinical trial status of the program. 

Drug Candidate 
BAY41-6551 (NKTR-061, Amikacin Inhale) 

Gram-negative pneumonias

Target Indications

NKTR-102 (PEGylated irinotecan) 

NKTR-102 (PEGylated irinotecan) 
NKTR-102 (PEGylated irinotecan) 
NKTR-102 (PEGylated irinotecan) 
Oral NKTR-118 (PEGylated naloxol) 
NKTR-105 (PEGylated docetaxel) 
NKTR-063 (Inhaled Vancomycin) 
NKTR-140 (protease inhibitor candidate) 
NKTR-171 (undisclosed pain candidate) 
NKTR-125 (PEGylated antihistamine candidate)  Allergic rhinitis

Second-line colorectal cancer in patients with the 
KRAS gene mutation
Metastatic breast cancer
Metastatic ovarian cancer
Metastatic cervical cancer
Opioid-induced constipation (OIC)
Solid tumors
Gram-positive pneumonias
HIV
Neuropathic pain

Status (1)

Phase 2 (Partnered with
Bayer Healthcare LLC)*
Phase 2

Phase 2
Phase 2
Phase 2
Phase 2
Phase 1
Phase 1*
Research/Preclinical
Research/Preclinical
Research/Preclinical

(1)  Status definitions are: 

Phase 3 or Pivotal—product in large-scale clinical trials conducted to obtain regulatory approval to market and sell the drug (these 
trials are typically initiated following encouraging Phase 2 trial results). 

Phase 2—product in clinical trials to establish dosing and efficacy in patients. 

Phase  1—product  in  clinical  trials,  typically  in  healthy  subjects,  to  test  safety.  In  the  case  of  oncology  drug  candidates,  Phase  1 
clinical trials are typically conducted in cancer patients. 

Research/preclinical—product is being studied in research by way of vitro studies and/or animal studies 

*  This  product  candidate  uses  a  liquid  aerosol  technology  platform  that  was  transferred  to  Novartis  in  the  pulmonary  asset  sale 
transaction  that  was  completed  on  December  31,  2008.  As  part  of  that  transaction,  we  retained  an  exclusive  license  to  this 
technology for the development and commercialization of this drug candidate originally developed by Nektar. 

8 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Overview of Selected Proprietary Product Development Programs 

NKTR-102 (PEGylated irinotecan) 

We are developing NKTR-102, a novel PEGylated form of irinotecan that was designed using our advanced polymer conjugate 
technology platform. The product candidate is currently in Phase 2 clinical development. Irinotecan, also known as Camptosar®, is a 
topoisomerase I inhibitor used for the treatment of solid tumors, including colorectal and lung cancers. By applying our proprietary 
pro-drug conjugate technology to irinotecan, NKTR-102 has the potential to be a more effective and tolerable anti-tumor agent. Using 
a proprietary approach that directly conjugates the drug to a multi-arm polymer architecture, we are the first company to have created 
a PEGylated small molecule with a unique pharmacokinetic profile that has demonstrated therapeutic activity in patients. 

NKTR-102 is currently in Phase 2 clinical development for the treatment of multiple cancers, including colorectal, ovarian, and 
breast. In addition, we also plan to commence a Phase 2 trial for NKTR-102 in patients with cervical cancer. A Phase 2 randomized 
trial of NKTR-102 was initiated in early 2009 that will evaluate the efficacy and safety of NKTR-102 monotherapy versus irinotecan 
in second-line colorectal cancer patients with the KRAS mutant gene. According to the National Comprehensive Clinical Network, 
colorectal cancer is the most frequently diagnosed cancer in men and women in the United States. In 2008, it is estimated that over 
108,000 new cases of colon cancer and approximately 40,780 cases of rectal cancer occurred. During the same year, it is estimated 
that 49,960 people died from colon and rectal cancer. The primary endpoint of the Phase 2 placebo-controlled trial of NKTR-102 in 
colorectal  cancer  will  be  a  clinically  meaningful  improvement  in  progression-free  survival  as  compared  to  standard  irinotecan 
monotherapy. According to recent data presented at the American Society of Clinical Oncology in 2008, it is estimated that up to 45% 
of colorectal cancer cases have this mutation in the KRAS gene and do not respond to EGFR-inhibitors, such as cetuximab. A Phase 
2a  study  of  NKTR-102  is  also  ongoing  to  evaluate  NKTR-102  in  combination  with  cetuximab  in  18  patients  with  refractory  solid 
tumors, primarily gastrointestinal-related cancers. 

Two separate NKTR-102 Phase 2 studies are also ongoing in ovarian and breast cancers. These studies are open label, single arm 
studies encompassing two treatment regimens (every 14 days or every 21 days). Patients include those with metastatic breast cancer 
with prior taxane treatment, those with metastatic and platinum-resistant ovarian cancer. The Phase 2 study for cervical cancer that we 
plan  to  initiate  in  2009  is  for  patients  with  metastatic  cervical  cancer.  The  trials  will  evaluate  the  overall  response  rate  (ORR)  of 
NKTR-102 monotherapy in each tumor setting, with secondary endpoints including progression-free survival, safety and six and 12-
month overall survival. 

Ovarian, breast, and cervical cancers remain significant health problems for women worldwide. In 2008, there were an estimated 
21,650  new  diagnoses  and  an  estimated  15,520 deaths  from  ovarian  cancer  in  the United  States  and,  historically,  less  than  40% of 
women with ovarian cancer are cured. The American Cancer Society estimated that over 184,000 new cases of invasive breast cancer 
were diagnosed and nearly 41,000 women died of breast cancer in the United States in 2008. Cervical cancer is a major world health 
problem  for  women.  The  global  annual  incidence  of  cervical  cancer  in  2002  was  over  490,000  with  an  annual  death  rate  of  over 
270,000. It is currently the third most common cancer in women worldwide. 

Oral NKTR-118 (PEGylated naloxol) 

Oral  NKTR-118  is  a  novel  oral  drug  candidate  that  is  in  the  final  stages  of  Phase  2  clinical  development,  combines  our  stable 
conjugate polymer technology with naloxol, a derivative of the opioid-antagonist drug naloxone. On March 2, 2009, we announced 
that  we  were  terminating  the  Phase  2  trial  for  Oral  NKTR-118  as  a  result  of  positive  preliminary  results.  The  peripheral  opioid 
antagonist  Oral  NKTR-118  targets  opioid  receptors  within  the  enteric  nervous  system,  which  mediate  opioid-induced  bowel 
dysfunction  (OBD),  a  symptom  resulting  from  opioid  use  that  encompasses  constipation,  bloating,  abdominal  cramping  and 
gastroesophageal  reflux.  Opioid-induced  constipation  (OIC)  is  the  hallmark  of  this  syndrome  and  is  generally  its  most  prominent 
component.  According  to  the  American  Pain  Society,  over  200  million  opioid  prescriptions  are  filled  in  the  U.S.  annually  with 
worldwide sales of opioids reaching $7.5 billion in 2007. Depending on the population studied and the definitions used, constipation 
occurs in up to 90% of patients taking opioids. Currently, there are no specific oral drugs approved or specifically indicated to treat 
OBD or OIC. 

We  are  also  conducting  early  discovery  research  on  a  new  drug  candidate,  NKTR-119,  which  we  intend  to  develop  as  a  co-
formulation  of  NKTR-118  and  a  long-acting opioid  analgesic.  Our  research plan for NKTR-119  program  is  to  create  a  long-acting 
opioid without the related gastrointestinal side effects, such as OBD including OIC. 

9 

 
 
 
 
 
 
 
 
 
 
 
 
NKTR-105 (PEGylated docetaxel) 

NKTR-105 is a novel PEGylated conjugate form of docetaxel, an anti-neoplastic agent belonging to the taxoid family that acts by 
disrupting  the  microtubular  network  in  cells.  Docetaxel  is  a  major  chemotherapy  agent  approved  for  use  in  five  different  cancer 
indications: breast, non-small cell lung, prostate, gastric, and head and neck. Annual sales of docetaxel in 2007 exceeded $2 billion. 
Oncolytics, such as docetaxel, typically have sub-optimal half-lives which can limit their therapeutic efficacy. Our advanced polymer 
conjugation technology can be used to optimize the bioactivity of these drugs and increase the sustained exposure of active drug to 
tumor cells in the body. 

NKTR-105 is currently being evaluated in a Phase 1 clinical trial in cancer patients that began in February 2009. The study will 
assess the safety, pharmacokinetics, and anti-tumor activity of NKTR-105 in approximately 30 patients with refractory solid tumors 
who have failed all prior available therapies. 

NKTR-140 (protease inhibitor) 

NKTR-140  is  a  novel  protease  inhibitor  product  candidate  to  treat  human  immunodeficiency  virus  (HIV),  which  can  lead  to 
acquired  immunodeficiency  syndrome  or  AIDS.  The  product  was  developed  using  Nektar’s  advanced  small  molecule  polymer 
conjugate technology. The drug candidate is designed to have improved potency as compared to leading protease inhibitors used in 
clinical practice today, and also to eliminate the need for a co-administered protease inhibitor booster, such as ritonavir. NKTR-140 is 
currently being studied in a number of preclinical trials. 

Overview of Select Licensing Partnerships for Approved Products 

All of the approved products today that use our technology platforms are a result of licensing collaborations with partners. We also 
have a number of product candidates in clinical development by our partners that use our technology or involve rights over which we 
have patents or other proprietary intellectual property. In a typical collaboration involving our PEGylation technology, we license our 
proprietary intellectual property related to our PEGylation technology or proprietary conjugated drug molecules in consideration for 
upfront  payments,  development  milestone  payments  and  royalties  from  sales  of  the  resulting  commercial  product  as  well  as  sales 
milestones. We also manufacture and supply our proprietary PEGylation materials to our partners. 

Neulasta®, Agreement with Amgen, Inc.  

In  July  1995,  we  entered  into  a  non-exclusive  supply  and  license  agreement  with  Amgen,  Inc.  (Amgen),  pursuant  to  which  we 
license  our  proprietary  PEGylation  technology  to  be  used  in  the  development  and  manufacture  of  Neulasta.  Neulasta  selectively 
stimulates  the  production  of  neutrophils  that  are  depleted  by  cytotoxic  chemotherapy,  a  condition  called  neutropenia  that  makes  it 
more difficult for the body to fight infections. We manufacture and supply our proprietary PEGylation materials for Amgen on a fixed 
price basis. The term of the agreement is for a fixed duration with a limited number of renewal options. This agreement is scheduled to 
expire in 2010. 

PEGASYS®, Agreement with F. Hoffmann-La Roche Ltd  

In February 1997, we entered into a license, manufacturing and supply agreement with F. Hoffmann-La Roche Ltd and Hoffmann-
La  Roche  Inc.  (Roche),  under  which  we  granted  Roche  a  worldwide,  exclusive  license  to  use  certain  PEGylation  materials  to 
manufacture  and  commercialize  a  certain  class  of  products,  of  which  PEGASYS  is  the  only  product  currently  commercialized. 
PEGASYS  is  approved  in  the  U.S.,  E.U.  and  other  countries  for  the  treatment  of  Hepatitis  C  and  is  designed  to  help  the  patient’s 
immune system fight the Hepatitis C virus. We currently manufacture our proprietary PEGylation materials for Roche on a price per 
gram basis. Roche has an option for a license extension related to the agreement. The agreement expires on the later of January 10, 
2015 or the expiration of our last relevant patent containing a valid claim. 

Somavert®, Agreement with Pfizer, Inc.  

In  January  2000,  we  entered  into  a  license,  manufacturing  and  supply  agreement  with  Sensus  Drug  Development  Corporation 
(subsequently  acquired  by  Pharmacia  Corp.  in  2001  and  then  acquired  by  Pfizer,  Inc.  in  2003),  for  the  PEGylation  of  Somavert 
(pegvisomant),  a  human  growth  hormone  receptor  antagonist  for  the  treatment  of  acromegaly.  We  currently  manufacture  our 
proprietary PEGylation reagent for Pfizer on a price per gram basis. The agreement expires on the later of ten years from the grant of 
first marketing authorization in the designated territory, which occurred in March 2003, or the expiration of our last relevant patent 
containing a valid claim. In addition, Pfizer may terminate the agreement if marketing authorization is withdrawn or marketing is no 
longer feasible due to certain circumstances, and either party may terminate for cause if certain conditions are met. 

10 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PEG-Intron®, Agreement with Schering-Plough Corporation  

In  February  2000,  we  entered  into  a  manufacturing  and  supply  agreement  with  Schering-Plough  Corporation  (Schering)  for  the 
manufacture  and  supply  of  our  proprietary  PEGylation  materials  to  be  used  by  Schering  in  production  of  a  pegylated  recombinant 
human  interferon-alpha  (PEG-Intron).  PEG-Intron  is  a  treatment  for  patients  with  Hepatitis  C.  We  currently  manufacture  our 
proprietary PEGylation materials for Schering on a price per gram basis. The agreement is for a fixed duration with renewal terms 
conditioned upon mutual agreement. 

Macugen®, Agreement with OSI Pharmaceuticals (formerly Eyetech)  

In  2002,  we  entered  into  a  license,  manufacturing  and  supply  agreement  with  Eyetech  Pharmaceuticals,  Inc.,  subsequently 
acquired  by  OSI  Pharmaceuticals,  Inc.  (OSI)  in  2005,  pursuant  to  which  we  license  our  proprietary  PEGylation  technology  for  the 
development and commercialization of Macugen®, a PEGylated anti-vascular endothelial growth factor aptamer currently approved in 
the  U.S.  and  E.U.  for  use  in  treating  age-related  macular  degeneration.  We  currently  manufacture  our  proprietary  PEGylation 
materials for OSI on a price per gram basis. Under the terms of the agreement, we will receive royalties on net product sales in any 
particular country covered by a valid patent claim for the longer of ten years from the date of the first commercial sale of the product 
in that country or the manufacture, use or sale of such product in that country. The agreement expires upon the expiration of our last 
relevant  patent  containing  a  valid  claim.  In  addition,  OSI  may  terminate  the  agreement  if  marketing  authorization  is  withdrawn  or 
marketing is no longer feasible due to certain circumstances, and either party may terminate for cause if certain conditions are met. 

CIMZIA™, Agreement with UCB Pharma  

In December 2000, we entered into a license, manufacturing and supply agreement for CIMZIA™ (certolizumab pegol, CDP870) 
with  Celltech  Chiroscience  Ltd.,  which  was  acquired  by  UCB  Pharma  (UCB)  in  2004.  Under  the  terms  of  the  agreement,  UCB  is 
responsible  for  all  clinical  development,  regulatory,  and  commercialization  expenses.  We  have  the  right  to  receive  manufacturing 
revenue  on  a  cost-plus  basis  and  royalties  on  net  product  sales.  We  are  entitled  to  receive  royalties  on  net  sales  of  the  CIMZIA™ 
product  in  any  particular  country  for  the  longer  of  ten  years  from  the  first  commercial  sale  of  the  product  in  that  country  or  the 
expiration of patent rights in that particular country. CIMZIA™ is currently approved in the treatment of Crohn’s Disease in the U.S. 
The  agreement  expires  upon  the  expiration  of  all  of  UCB’s  royalty  obligations,  provided  that  the  agreement  can  be  extended  for 
successive two year renewal periods upon mutual agreement of the parties. In addition, UCB may terminate the agreement should it 
cease the development and marketing of CIMZIA™ and either party may terminate for cause under certain conditions. 

In April 2008, UCB received FDA approval for  CIMZIA™ in the U.S. in the treatment of moderate to severe Crohn’s disease. 
Crohn’s disease is a chronic digestive disorder of the intestines commonly referred to as inflammatory bowel disease that affects an 
estimated 400,000 to 600,000 individuals in the U.S. In March 2008, the European Medicines Agency (EMEA) rejected the appeal 
following  CHMP  refusal  of  the  MAA  for  CIMZIA™  in  the  treatment  of  patients  with  Crohn’s  disease,  a  chronic  and  debilitating 
inflammatory disease. 

In  December  2007,  UCB  submitted  a  Biologics  License  Application  (BLA)  to  the  FDA  for  CIMZIA™  for  the  treatment  of 
rheumatoid arthritis. Rheumatoid arthritis is an autoimmune disease that causes chronic inflammation of the joints. The submission 
was accepted in February of 2008. In January 2009, UCB announced that the FDA issued a Complete Response Letter (CRL) relating 
to the BLA of CIMZIA™, the first PEGylated anti-TNF, for the treatment of rheumatoid arthritis. In July 2008, UCB announced that a 
Marketing Authorisation Application (MAA) has been submitted to and accepted for review by the EMEA requesting the approval of 
CIMZIA™ (certolizumab pegol) as a subcutaneous treatment for adults with moderate to severe active rheumatoid arthritis. 

UCB is also conducting clinical trials on CIMZIA™ for psoriasis and other indications. The product is in Phase 2 trials for the 

treatment of psoriasis. 

MIRCERA® (C.E.R.A.) (Continuous Erythropoietin Receptor Activator), Agreement with F. Hoffmann-La Roche Ltd 

In  December  2000,  we  entered  into  a  license,  manufacturing  and  supply  agreement  with  F.  Hoffmann-La  Roche  Ltd  and 
Hoffmann-La Roche Inc. (Roche), which was amended and restated in its entirety in December 2005. Pursuant to the agreement, we 
license our proprietary PEGylation materials for use in the development and manufacture of Roche’s MIRCERA product. MIRCERA 
is a novel continuous erythropoietin receptor activator indicated for the treatment of anemia associated with chronic kidney disease in 
patients  on  dialysis  and  patients  not  on  dialysis.  We  are  entitled  to  receive  royalties  on  net  sales  of  the  MIRCERA  product  in  any 
particular country for the longer of ten years from the first commercial sale of the product in that country or the expiration of patent 
rights  in  that  particular  country.  The  agreement  expires  upon  the  expiration  of  all  of  Roche’s  royalty  obligations,  unless  earlier 
terminated by Roche for convenience or by either party for cause under certain conditions. 

11 

 
 
 
 
 
 
 
 
 
 
 
 
 
In  April  2006,  Roche  filed  a  BLA  for  MIRCERA  with  the  FDA  for  the  treatment  of  anemia  associated  with  chronic  kidney 
disease, including patients on dialysis or not on dialysis, and an MAA with the EMEA to treat patients with chronic kidney disease. In 
May 2007, MIRCERA was approved in the EU and the product was subsequently launched by Roche in the EU in August of 2007. In 
November 2007, the FDA approved Roche’s BLA application for MIRCERA but the product has not been launched in the U.S. as a 
result of patent-related issues. 

In October 2008, a federal district court ruled in favor of Amgen Inc. in a patent infringement lawsuit involving MIRCERA and 
issued a permanent injunction which prevents Roche from marketing or selling MIRCERA in the U.S. even though the FDA approved 
MIRCERA. This federal district court decision is currently on appeal to the U.S. Court of Appeals for the Federal Circuit. Given the 
uncertain and lengthy nature of the legal appeal process, it is not possible for us to estimate the timing of a decision on Roche’s appeal 
or  potential  remand  of  this  case  for  additional  proceedings.  If  Roche  is  not  successful  in  getting  relief  from  the  current  permanent 
injunction, we estimate that Roche would not be able to market or sell MIRCERA in the U.S. until 2013 at the earliest. 

Overview of Select Partnered Drug Development Programs 

BAY41-6551 (NKTR-061, Amikacin Inhale), Agreement with Bayer Healthcare LLC 

In August 2007, we entered into a co-development, license and co-promotion agreement with Bayer Healthcare LLC (Bayer) to 
develop a specially-formulated Amikacin (BAY41-6551, NKTR-061, Amikacin Inhale). Under the terms of the agreement, Bayer is 
responsible for most future clinical development and commercialization costs, all activities to support worldwide regulatory filings, 
approvals and related activities, further development of formulated Amikacin and final product packaging for BAY41-6551. We are 
responsible for any future development of the nebulizer device used in BAY41-6551through the completion of Phase 3 clinical trials 
and scale-up for commercialization. Under the terms of the agreement, we are entitled to development milestones and sales milestones 
upon achievement of certain annual sales targets. We are also entitled to royalties based on annual worldwide net sales of BAY41-
6551. Our right to receive these royalties in any particular country will expire upon the later of ten years after the first commercial sale 
of the product in that country or the expiration of certain patent rights in that particular country, subject to certain exceptions. The 
agreement expires in relation to a particular country upon the expiration of all royalty and payment obligations between the parties 
related  to  such  country.  Subject  to  termination  fee  payment  obligations,  Bayer  also  has  the  right  to  terminate  the  agreement  for 
convenience.  In  addition,  the  agreement  may  also  be  terminated  by  either  party  for  certain  product  safety  concerns,  the  product’s 
failure to meet certain minimum commercial profile requirements or uncured material breaches by the other party. For certain Bayer 
terminations, we may have reimbursement obligations to Bayer. 

BAY41-6551  is  under  development  to  treat  Gram-negative  pneumonias,  including  Hospital-Acquired  (HAP),  Healthcare-
Associated, and Ventilator-Associated pneumonias. Gram-negative pneumonias are often the result of complications of other patient 
conditions  or  surgeries.  BAY41-6551  will  be  adjunctive  therapy  to  the  current  antibiotic  therapies  administered  intravenously  as 
standard of care. The targeted aerosol delivery platform in BAY41-6551 delivers antimicrobial agent directly to the site of infection in 
the lungs. The product can be integrated with conventional mechanical ventilators or used as a hand-held ‘off-vent’ device for patients 
no longer requiring breathing assistance. 

Gram-negative pneumonia carries a mortality risk of over 50% in mechanically-ventilated patients and accounts for a substantial 

proportion of the pneumonias in intensive care units (ICUs) today. 

Hematide™, Agreement with Affymax, Inc.  

In  April  2004,  we  entered  into  a  license,  manufacturing  and  supply  agreement  with  Affymax,  Inc.  (Affymax),  under  which  we 
granted Affymax a worldwide, non-exclusive license under certain of our proprietary PEGylation technology to develop, manufacture 
and  commercialize  Hematide.  We  currently  manufacture  our  proprietary  PEGylation  materials  for  Affymax  on  a  fixed  price  basis 
subject to annual adjustments. Affymax has an option to convert this manufacturing pricing arrangement to cost plus at any time prior 
to  the  date  the  NDA  for  Hematide  is  submitted  to  the  FDA.  In  addition,  Affymax  is  responsible  for  all  clinical  development, 
regulatory and commercialization expenses and we are entitled to development milestones and royalties on net sales of Hematide. Our 
right to receive royalties in any particular country will expire upon the later of ten years after the first commercial sale of the product 
in that country or the expiration of patent rights in that particular country. The agreement expires on a country-by-country basis upon 
the expiration of Affymax’s royalty obligations. The agreement may also be terminated by either party for the other party’s continued 
material breach after a cure period or by us in the event that Affymax challenges the validity or enforceability of any patent licensed to 
them under the agreement. 

12 

 
 
 
 
 
 
 
 
 
 
 
CDP-791, Agreement with UCB Pharma 

In  December  2000,  we  entered  into  a  licensing,  manufacturing  and  supply  agreement  with  Celltech  Chiroscience  Ltd. 
(subsequently  acquired  by  UCB  Pharma  or  UCB)  for  several  PEGylated  antibody  fragment  products,  one  of  which  was  a  PEG-
antibody  fragment  angiogenesis  inhibitor  for  non-small  cell  lung  cancer.  In  August  2002,  the  agreement  was  superseded  by  an 
agreement that relates only to CDP-791. Under the terms of the 2002 agreement, we provide development and manufacturing services 
for the CDP-791 product. UCB is responsible for all clinical development, regulatory and commercialization expenses. We have the 
right  to  receive  development  milestone  payments,  manufacturing  revenue  on  a  cost-plus  basis  and  royalties  on  net  product  sales 
following  commercial  launch.  Our  right  to  receive  royalties  in  any  particular  country  will  expire  upon  the  later  of  between  ten  or 
twelve years (which period depends on certain factors) after the first commercial sale of the product in that country or the expiration of 
patent rights in that particular country. The agreement expires upon the expiration of all of UCB’s royalty obligations, provided that 
the agreement can be extended for successive two year renewal periods upon mutual agreement of the parties. In addition, UCB may 
terminate the agreement should it cease the development and marketing of the product and either party may terminate for cause under 
certain conditions. 

Hemophilia Programs, Agreement with Subsidiaries of Baxter International 

In  September  2005,  we  entered  into  an  exclusive  research,  development,  license  and  manufacturing  and  supply  agreement  with 
Baxter Healthcare SA and Baxter Healthcare Corporation (Baxter) to develop products with an extended half-life for the treatment and 
prophylaxis of Hemophilia A patients using our PEGylation technology. In December 2007, we expanded our agreement with Baxter 
to include the license of our PEGylation technology and proprietary PEGylation methods with the potential to improve the half-life of 
any  future  products  Baxter  may  develop  for  the  treatment  and  prophylaxis  of  Hemophilia  B  patients.  Under  the  terms  of  the 
agreement, we are entitled to research and development funding, and we manufacture our proprietary PEGylation materials for Baxter 
on  a  cost  plus  basis.  Baxter  is  responsible  for  all  clinical  development,  regulatory,  and  commercialization  expenses.  In  relation  to 
Hemophilia A, we are entitled to development milestones and royalties on net sales varying by product and country of sale. Our right 
to receive these royalties in any particular country will expire upon the later of ten years after the first commercial sale of the product 
in that country or the expiration of patent rights in certain designated countries or in that particular country. In relation to Hemophilia 
B, we are entitled to development and sales milestones and royalties on net sales varying by product and country of sale. Our right to 
receive these royalties in any particular country will expire upon the later of twelve years after the first commercial sale of the product 
in that country or the expiration of patent rights in certain designated countries or in that particular country. The agreement expires in 
relation  to  a  particular  product  and  country  upon  the  expiration  of  all  of  Baxter’s  royalty  obligations  related  to  such  product  and 
country. The agreement may also be terminated by either party for the other party’s material breach or insolvency, provided that such 
other party has been given a chance to cure or remedy such breach or insolvency. Subject to certain limitations as to time, and possible 
termination  fee  payment  obligations,  Baxter  also  has  the  right  to  terminate  the  agreement  for  convenience.  We  have  the  right  to 
terminate the agreement or convert Baxter’s license from exclusive to non-exclusive in the event Baxter fails to comply with certain 
diligence obligations. 

Cipro Inhale, Assigned to Novartis as of December 31, 2008 

We  were  a  party  to  a  collaborative  research,  development  and  commercialization  agreement  with  Bayer  Schering  Pharma  AG 
related to the development of an inhaled powder formulation of Ciprofloxacin for the treatment of chronic lung infections caused by 
Pseudomonas aeruginosa in cystic fibrosis patients. As of December 31, 2008, we assigned the collaborative research, development 
and commercialization agreement to Novartis Pharma AG in connection with the closing of the asset sale transaction. Pursuant to the 
terms of the transaction, we maintain the right to receive certain potential royalties in the future based on net product sales if Cipro 
Inhale receives regulatory approval and is successfully commercialized. 

2008 Developments in Our Business 

Exit from the Inhaled Insulin Programs 

In 1995, we entered into a collaborative development and licensing agreement with Pfizer to develop and market Exubera® and, in 
2006  and  2007,  we  entered  into  a  series  of  interim  letter  agreements  with  Pfizer  to  develop  a  next  generation  form  of  dry  powder 
inhaled insulin and proprietary inhaler device, also known as NGI. In January 2006, Exubera received marketing approval in the U.S. 
and EU for the treatment of adults with Type 1 and Type 2 diabetes. Under the collaborative development and licensing agreement, 
Pfizer had sole responsibility for marketing and selling Exubera. We performed all of the manufacturing of the Exubera dry powder 
insulin,  and  through  third  party  contract  manufacturers  (Bespak  Europe  Ltd.  and  Tech  Group,  Inc.),  we  supplied  Pfizer  with  the 
Exubera inhalers. Our total revenue from Pfizer was nil, $189.1 million, and $139.9 million, representing 0%, 69% and 64% of total 
revenue, for the years ended December 31, 2008, 2007, and 2006, respectively. 

13 

 
 
 
 
 
 
 
 
 
 
 
On  October  18,  2007,  Pfizer  announced  that  it  was  exiting  the  Exubera  business  and  gave  notice  of  termination  under  our 
collaborative  development  and  licensing  agreement.  On  November  9,  2007,  we  entered  into  a  termination  agreement  and  mutual 
release  with  Pfizer.  Under  this  agreement  we  received  a  one-time  payment  of  $135.0  million  in  November  2007  from  Pfizer  in 
satisfaction of all outstanding contractual obligations under our then-existing agreements relating to Exubera and NGI. All agreements 
between  Pfizer  and  us  related  to  Exubera  and  NGI,  other  than  the  termination  agreement  and  mutual  release  and  a  related  interim 
Exubera  manufacturing  maintenance  letter,  terminated  on  November  9,  2007.  In  February  2008,  we  entered  into  a  termination 
agreement  with  Bespak  and  Tech  Group  pursuant  to  which  we  paid  an  aggregate  of  $39.9  million  in  satisfaction  of  outstanding 
accounts payable and termination costs and expenses that were due under the Exubera inhaler contract manufacturing agreement. We 
also entered into a maintenance agreement with both Pfizer and Tech Group to preserve key personnel and manufacturing capacity to 
support potential future Exubera inhaler manufacturing if we found a new partner for the inhaled insulin program. 

On April 9, 2008, we announced that we had ceased all negotiations with potential partners for Exubera and NGI as a result of new 
data analysis from ongoing clinical trials conducted by Pfizer which indicated an increase in the number of new cases of lung cancer 
in Exubera patients who were former smokers as compared to patients in the control group who were former smokers. In April 2008, 
we ceased all spending associated with maintaining Exubera manufacturing capacity and any further NGI development, including, but 
not limited to, terminating the Exubera manufacturing capacity maintenance arrangements with Pfizer and Tech Group. 

Asset Sale to Novartis 

On  December  31,  2008,  we  completed  the  sale  of  certain  assets  related  to  our  pulmonary  business,  associated  technology  and 
intellectual  property  to  Novartis  Pharma  AG  and  Novartis  Pharmaceuticals  Corporation  (together  referred  to  as  Novartis)  for  a 
purchase  price  of  $115.0  million  in  cash  (Novartis  Pulmonary  Asset  Sale).  Under  the  terms  of  the  transaction,  we  transferred  to 
Novartis certain assets and obligations related to our pulmonary technology, development and manufacturing operations including: 

•  dry  powder  and  liquid  pulmonary  technology  platform  including  but  not  limited  to  our  pulmonary  inhalation  devices, 

formulation technology, manufacturing technology and related intellectual property; 

•  capital  equipment,  information  systems  and  facility  lease  obligations  for  our  pulmonary  development  and  manufacturing 

facility in San Carlos, California; 

•  manufacturing and associated development services payments for the Cipro Inhale program; 

•  manufacturing  and  royalty  rights  to  the  Tobramycin  Inhalation  Powder  (TIP)  program  through  the  termination  of  our 

collaboration agreement with Novartis; 

•  certain other interests that we had in two private companies; and  

•  approximately  140  of  our  personnel  primarily  dedicated  to  our  pulmonary  technology,  development  programs,  and 

manufacturing operations. 

In consideration for the transfer of the above described pulmonary assets, we received $115.0 million in cash on December 31, 
2008. In addition, we retained all of our rights to BAY41-6551, partnered with Bayer Healthcare LLC, certain royalty rights for the 
Cipro  Inhale  development  program  partnered  with  Bayer  Schering Pharma  AG,  all  rights  to  the  ongoing  development  program  for 
NKTR-063, and certain intellectual property rights specific to inhaled insulin. 

In connection with Novartis Pulmonary Asset Sale, we also entered into an Exclusive License Agreement with Novartis Pharma. 
Pursuant  to  the  Exclusive  License  Agreement,  Novartis  Pharma  granted  back  to  us  an  exclusive,  irrevocable,  perpetual,  non-
transferable,  royalty-free  and  worldwide  license  under  certain  specific  patent  rights  and  other  related  intellectual  property  rights 
acquired by Novartis Pharma from Nektar in the transaction, as well as certain improvements or modifications thereto that are made 
by  Novartis  Pharma  after  the  closing.  Certain  of  such  patent  rights  and  other  related  intellectual  property  rights  relate  to  our 
development  program  for  NKTR-063  or  are  necessary  for  us  to  satisfy  certain  of  our  continuing  contractual  obligations  to  third 
parties, including in connection with development, manufacture, sale, and commercialization activities related to BAY41-6551. We 
also entered into a service agreement pursuant to which we have subcontracted to Novartis certain services to be performed related to 
our  partnered  program  for  BAY41-6551  and  a  transition  services  agreement  pursuant  to  which  Novartis  and  we  will  provide  each 
other  with  specified  services  for  limited  time  periods  following  the  closing  of  the  Novartis  Pulmonary  Asset  Sale  to  facilitate  the 
transition of the acquired assets and business from us to Novartis. 

14 

 
 
 
 
 
 
 
 
 
 
 
 
 
Research and Development 

Our  total  Research  and  development  expenditures  can  be  disaggregated  into  the  following  significant  types  of  expenses  (in 

millions): 

Salaries and employee benefits 
Stock compensation expense 
Facility and equipment 
Outside services, including Contract Research Organizations
Supplies, including clinical trial materials 
Travel, lodging, and meals 
Other 

Research and development 

Manufacturing and Supply 

Years ended December 31,
2007

2006

2008 
 $  58.4  $

69.9
9.7
31.0
24.1
8.9
2.4
3.4
 $  154.4  $ 153.6 $ 149.4

70.7 $
6.3
33.9
26.8
10.8
2.2
2.9

4.6 
25.9 
40.2 
19.0 
3.3 
3.0 

We  have  a  manufacturing  facility  located  in  Huntsville,  Alabama  related  to  our  PEGylation  and  advanced  polymer  conjugate 
technologies.  This  facility  is  capable  of  manufacturing  PEGylation  derivatives  and  starting  materials  for  active  pharmaceutical 
ingredients  (APIs).  The  facility  is  also  used  to  produce  APIs  for  clinical  development  for  our  proprietary  product  candidates  that 
utilize our PEGylation and advanced polymer conjugate technology. The facility and associated equipment is designed and operated to 
be in compliance with the guidelines of the International Conference on Harmonization of Technical Requirements for Registration of 
Pharmaceuticals for Human Use (ICH) applicable to APIs (ICH Q7A guidelines). 

We  source  drug  starting  materials  for  our  manufacturing  activities  from  one  or  more  suppliers.  If  we  are  responsible  for 
manufacturing activities under a collaboration arrangement, we typically source drug starting materials from the collaboration partner. 
For the drug starting materials necessary for our proprietary drug candidate development, we have agreements for the supply of such 
drug components with drug suppliers that we believe have sufficient capacity to meet our demands. However, from time to time, we 
source critical raw materials from one or a limited number of suppliers and there is a risk that if such supply were interrupted, it would 
materially harm our business. In addition, we typically order raw materials on a purchase order basis and do not enter into long-term 
dedicated capacity or minimum supply arrangements. 

Prior to the closing of the Novartis Pulmonary Asset Sale on December 31, 2008, we operated a drug powder manufacturing and 
packaging facility  in San Carlos, California capable of producing drug powders in quantities sufficient for clinical trials of product 
candidates  utilizing  our  pulmonary  technology.  As  part  of  the  Novartis  Pulmonary  Asset  Sale,  we  transferred  this  manufacturing 
facility  and  the  related  operations,  and  Novartis  hired  approximately  140  of  the  related  supporting  personnel,  as  of  December  31, 
2008. 

Government Regulation 

The  research  and  development,  clinical  testing,  manufacture  and  marketing  of  products  using  our  technologies  are  subject  to 
regulation  by  the  Food  and  Drug  Administration  (FDA)  and  by  comparable  regulatory  agencies  in  other  countries.  These  national 
agencies and other federal, state and local entities regulate, among other things, research and development activities and the testing (in 
vitro,  in  animals,  and  in  human  clinical  trials),  manufacture,  labeling,  storage,  recordkeeping,  approval,  marketing,  advertising  and 
promotion of our products. 

The approval process required by the FDA before a product using any of our technologies may be marketed in the U.S. depends on 
whether the chemical composition of the product has previously been approved for use in other dosage forms. If the product is a new 
chemical entity that has not been previously approved, the process includes the following: 

•  extensive preclinical laboratory and animal testing;  

• 

submission of an Investigational New Drug application (IND) prior to commencing clinical trials; 

•  adequate and well-controlled human clinical trials to establish the safety and efficacy of the drug for the intended indication; 

and 

• 

submission to the FDA of a New Drug Application (NDA) for approval of a drug, a Biologic License Application (BLA) for 
approval of a biological product or a Premarket Approval Application (PMA) or Premarket Notification 510(k) for a medical 
device product (a 510(k)). 

15 

 
 
 
 
  
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
If  the  active  chemical  ingredient  has  been previously  approved  by  the  FDA,  the  approval  process  is similar,  except  that  certain 
preclinical tests relating to systemic toxicity normally required for the IND and NDA or BLA may not be necessary if the company 
has a right of reference to such data or is eligible for approval under Section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act. 

Preclinical  tests  include  laboratory  evaluation  of  product  chemistry  and  animal  studies  to  assess  the  safety  and  efficacy  of  the 
product and its chosen formulation. Preclinical safety tests must be conducted by laboratories that comply with FDA good laboratory 
practices (GLP) regulations. The results of the preclinical tests for drugs, biological products and combination products subject to the 
primary jurisdiction of the FDA’s Center for Drug Evaluation and Research (CDER) or Center for Biologics Evaluation and Research 
(CBER) are submitted to the FDA as part of the IND and are reviewed by the FDA before clinical trials can begin. Clinical trials may 
begin 30 days after receipt of the IND by the FDA, unless the FDA raises objections or requires clarification within that period. 

Clinical  trials  involve  the  administration  of  the  drug  to  healthy  volunteers  or  patients  under  the  supervision  of  a  qualified, 
identified  medical  investigator  according  to  a  protocol  submitted  in  the  IND  for  FDA  review.  Drug  products  to  be  used  in  clinical 
trials must be manufactured according to current good manufacturing practices (cGMP). Clinical trials are conducted in accordance 
with protocols that detail the objectives of the study and the parameters to be used to monitor participant safety and product efficacy as 
well as other criteria to be evaluated in the study. Each protocol is submitted to the FDA in the IND. 

Apart from the IND process described above, each clinical study must be reviewed by an independent Institutional Review Board 
(IRB) and the IRB must be kept current with respect to the status of the clinical study. The IRB considers, among other things, ethical 
factors, the potential risks to subjects participating in the trial and the possible liability to the institution where the trial is conducted. 
The IRB also reviews and approves the informed consent form to be signed by the trial participants and any significant changes in the 
clinical study. 

Clinical trials are typically conducted in three sequential phases. Phase 1 involves the initial introduction of the drug into healthy 
human  subjects  (in  most  cases)  and  the  product  generally  is  tested  for  tolerability,  pharmacokinetics,  absorption,  metabolism  and 
excretion. Phase 2 involves studies in a limited patient population to: 

•  determine the preliminary efficacy of the product for specific targeted indications; 

•  determine dosage and regimen of administration; and  

• 

identify possible adverse effects and safety risks.  

If  Phase  2  trials  demonstrate  that  a  product  appears  to  be  effective  and  to  have  an  acceptable  safety  profile,  Phase  3  trials  are 
undertaken to evaluate the further clinical efficacy and safety of the drug and formulation within an expanded patient population at 
geographically  dispersed  clinical  study  sites  and  in  large  enough  trials  to  provide  statistical  proof  of  efficacy  and  tolerability.  The 
FDA, the clinical trial sponsor, the investigators or the IRB may suspend clinical trials at any time if any one of them believes that 
study participants are being subjected to an unacceptable health risk. In some cases, the FDA and the drug sponsor may determine that 
Phase 2 trials are not needed prior to entering Phase 3 trials. 

Following a series of formal and informal meetings between the drug sponsor and the regulatory agencies, the results of product 
development, preclinical studies and clinical studies are submitted to the FDA as an NDA or BLA for approval of the marketing and 
commercial  shipment  of  the  drug  product.  The  FDA  may  deny  approval  if  applicable  regulatory  criteria  are  not  satisfied  or  may 
require additional clinical or pharmaceutical testing or requirements. Even if such data are submitted, the FDA may ultimately decide 
that  the  NDA  or  BLA  does  not  satisfy  all  of  the  criteria  for  approval.  Additionally,  the  approved  labeling  may  narrowly  limit  the 
conditions  of  use  of  the  product,  including  the  intended  uses,  or  impose  warnings,  precautions  or  contraindications  which  could 
significantly  limit  the  potential  market  for  the  product.  Further,  as  a  condition  of  approval,  the  FDA  may  impose  post-market 
surveillance, or Phase 4, studies or risk management programs. Product approvals, once obtained, may be withdrawn if compliance 
with  regulatory  standards  is  not  maintained  or  if  safety  concerns  arise  after  the  product  reaches  the  market.  The  FDA  may  require 
additional  post-marketing  clinical  testing  and  pharmacovigilance  programs  to  monitor  the  effect  of  drug  products  that  have  been 
commercialized and has the power to prevent or limit future marketing of the product based on the results of such programs. After 
approval,  there  are  ongoing  reporting  obligations  concerning  adverse  reactions  associated  with  the  product,  including  expedited 
reports for serious and unexpected adverse events. 

16 

 
 
 
 
 
 
 
 
 
 
 
 
Each manufacturer of drug product for the U.S. market must be registered with the FDA and typically is inspected by the FDA 
prior to NDA or BLA approval of a drug product manufactured by such establishment. Establishments handling controlled substances 
must  also  be  licensed  by  the  U.S.  Drug  Enforcement  Administration.  Manufacturing  establishments  of  U.S.  marketed  products  are 
subject to inspections by the FDA for compliance with cGMP and other U.S. regulatory requirements. They are also subject to U.S. 
federal,  state,  and  local  regulations  regarding  workplace  safety,  environmental  protection  and  hazardous  and  controlled  substance 
controls, among others. 

A  number  of  the  drugs  we  are  developing  are  already  approved  for  marketing  by  the  FDA  in  another  form  or  using  another 
delivery  system.  We  believe  that,  when  working  with  drugs  approved  in  other  forms,  the  approval  process  for  products  using  our 
alternative  drug  delivery  or  formulation  technologies  may  involve  less  risk  and  require  fewer  tests  than  new  chemical  entities  do. 
However, we expect that our formulations will often use excipients not currently approved for use. Use of these excipients will require 
additional toxicological testing that may increase the costs of, or length of time needed to, gain regulatory approval. In addition, as 
they relate to our products, regulatory procedures may change as regulators gain relevant experience, and any such changes may delay 
or increase the cost of regulatory approvals. 

For product candidates currently under development utilizing pulmonary technology, the pulmonary inhaler devices are considered 
to be part of a drug and device combination for deep lung delivery of each specific molecule. The FDA will make a determination as 
to the most appropriate center and division within the agency that will assume prime responsibility for the review of the applicable 
applications, which would consist of an IND and an NDA or BLA where CDER or CBER are determined to have primary jurisdiction 
or an investigational device exemption application and PMA or 510(k) where the Center for Devices and Radiological Health (CDRH) 
is determined to have primary jurisdiction. In the case of our product candidates, CDER in consultation with CDRH could be involved 
in the review. The assessment of jurisdiction within the FDA is based upon the primary mode of action of the drug or the location of 
the specific expertise in one of the centers. 

Where CDRH is determined to have primary jurisdiction over a product, 510(k) clearance or PMA approval is required. Medical 
devices are classified into one of three classes—Class I, Class II, or Class III—depending on the degree of risk associated with each 
medical device and the extent of control needed to ensure safety and effectiveness. Devices deemed to pose lower risks are placed in 
either  Class  I  or  II,  which  requires  the  manufacturer  to  submit  to  the  FDA  a  Premarket  Notification  requesting  permission  to 
commercially  distribute  the  device.  This  process  is  known  as  510(k)  clearance.  Some  low  risk  devices  are  exempted  from  this 
requirement. Devices deemed by the FDA to pose the greatest risk, such as life-sustaining, life-supporting or implantable devices, or 
devices deemed not substantially equivalent to a previously cleared 510(k) device are placed in Class III, requiring PMA approval. 

To date, our partners have generally been responsible for clinical and regulatory approval procedures, but we may participate in 
this  process  by  submitting  to  the  FDA  a  drug  master  file  developed  and  maintained  by  us  which  contains  data  concerning  the 
manufacturing  processes  for  the  inhaler  device  or  drug.  For  our  proprietary  products,  we  prepare  and  submit  an  IND  and  are 
responsible for additional clinical and regulatory procedures for product candidates being developed under an IND. The clinical and 
manufacturing  development  and  regulatory  review  and  approval  process  generally  takes  a  number  of  years  and  requires  the 
expenditure of substantial resources. Our ability to manufacture and market products, whether developed by us or under collaboration 
agreements, ultimately depends upon the completion of satisfactory clinical trials and success in obtaining marketing approvals from 
the FDA and equivalent foreign health authorities. 

Sales of our products outside the U.S. are subject to local regulatory requirements governing clinical trials and marketing approval 

for drugs. Such requirements vary widely from country to country. 

In the U.S., under the Orphan Drug Act, the FDA may grant orphan drug designation to drugs intended to treat a rare disease or 
condition, which is generally a disease or condition that affects fewer than 200,000 individuals in the U.S. The company that obtains 
the  first  FDA  approval  for  a  designated  orphan  drug  for  a  rare  disease  receives  marketing  exclusivity  for  use  of  that  drug  for  the 
designated  condition  for  a  period  of  seven  years.  In  addition,  the  Orphan  Drug  Act  provides  for  protocol  assistance,  tax  credits, 
research grants, and exclusions from user fees for sponsors of orphan products. Once a product receives orphan drug exclusivity, a 
second product that is considered to be the same drug for the same indication may be approved during the exclusivity period only if 
the second product is shown to be “clinically superior” to the original orphan drug in that it is more effective, safer or otherwise makes 
a “major contribution to patient care” or the holder of exclusive approval cannot assure the availability of sufficient quantities of the 
orphan drug to meet the needs of patients with the disease or condition for which the drug was designated. 

17 

 
 
 
 
 
 
 
 
 
In the U.S., the FDA may grant Fast Track designation to a product candidate, which allows the FDA to expedite the review of 
new  drugs  that  are  intended  for  serious  or  life-threatening  conditions  and  that  demonstrate  the  potential  to  address  unmet  medical 
needs. An important feature of Fast Track designation is that it emphasizes the critical nature of close, early communication between 
the FDA and the sponsor company to improve the efficiency of product development. 

Patents and Proprietary Rights 

We invest a significant portion of our resources in the creation and development of new drug compounds that serve unmet needs in 
the treatment of patients. In doing so, we create intellectual property. As part of our strategy to secure our intellectual property created 
by these efforts, we routinely apply for patents, rely on trade secret protection, and enter into contractual obligations with third parties. 
When appropriate, we will defend our intellectual property, taking any and all legal remedies available to us, including, for example, 
asserting  patent  infringement,  trade  secret  misappropriation  and  breach  of  contract  claims.  As  of  January  1,  2009,  we  owned 
approximately 80 U.S. and 335 foreign patents. Currently, we have over approximately 56 patent applications pending in the U.S. and 
466 pending in other countries. 

A  focus  area  of  our  current  drug  creation  and  development  efforts  centers  on  our  innovations  in  and  improvements  to  our 
PEGylation  and  advanced  polymer  conjugate  technology  platforms.  In  this  area,  our  patent  portfolio  contains  patents  and  patent 
applications that encompass our PEGylation and advanced polymer conjugate technology platforms, some of which we acquired in 
our  acquisition  of  Shearwater  Corporation  in  June  2001.  More  specifically,  our  patents  and  patent  applications  cover  polymer 
architecture,  drug  conjugates,  formulations,  methods  of  making  polymers  and  polymer  conjugates,  and  methods  of  administering 
polymer conjugates. Our patent strategy is to file patent applications on innovations and improvements to cover a significant majority 
of  the  major  pharmaceutical  markets  in  the  world.  Generally,  patents  have  a  term  of  twenty  years  from  the  earliest  priority  date 
(assuming all maintenance fees are paid). In some instances, patent terms can be increased or decreased, depending on the laws and 
regulations of the country or jurisdiction that issued that patent. 

In connection with the Novartis Pulmonary Asset Sale, as of December 31, 2008, we entered into an exclusive license agreement 
with  Novartis  Pharma.  Pursuant  to  the  exclusive  license  agreement,  Novartis  Pharma  grants  back  to  us  an  exclusive,  irrevocable, 
perpetual, royalty-free and worldwide license under certain specific patent rights and other related intellectual property rights acquired 
by Novartis from us in the Novartis Pulmonary Asset Sale, as well as certain improvements or modifications thereto that are made by 
Novartis. Certain of such patent rights and other related intellectual property rights relate to our development program for NKTR-063 
or are necessary for us to satisfy certain continuing contractual obligations to third parties, including in connection with development, 
manufacture, sale, and commercialization activities related to BAY41-6551 partnered with Bayer Healthcare LLC. 

Our revenue is derived from our collaboration agreements with partners, under which we may receive contract research payments, 
milestone  payments  based  on  clinical  progress,  regulatory  progress  or  net  sales  achievements,  royalties  or  manufacturing  revenue. 
Bayer (including Bayer Healthcare LLC and Bayer Schering Pharma AG), UCB Pharma, Novartis, and Roche represented 24%, 16%, 
15%, and 14%, respectively, of our total revenue during the year ended December 31, 2008. No other partner accounted for more than 
10% of our total revenue during the year ended December 31, 2008. If we are unable to continue to develop and protect proprietary 
intellectual property and license our technologies to partners, our business, results of operations and financial condition could suffer. 

The  patent  positions  of  pharmaceutical  and  biotechnology  companies,  including  ours,  involve  complex  legal  and  factual  issues. 
There can be no assurance that the patents we apply for will be issued to us or that the patents that are issued to us will be held valid 
and enforceable in a court of law. Even for patents that are enforceable, we anticipate that any attempt to enforce our patents would be 
time consuming and costly. Additionally, the coverage claimed in a patent application can be significantly reduced before the patent is 
issued. As a consequence, we do not know whether any of our pending patent applications will be granted with broad coverage or 
whether the claims that eventually issue, or those that have issued, will be circumvented. Since publication of discoveries in scientific 
or patent literature often lag behind actual discoveries, we cannot be certain that we were the first inventor of inventions covered by 
our patents or patent applications or that we were the first to file patent applications for such inventions. Moreover, we may have to 
participate in interference proceedings in the U.S. Patent and Trademark Office, which could result in substantial cost to us, even if the 
eventual outcome is favorable. An adverse outcome could subject us to significant liabilities to third parties, require disputed rights to 
be licensed from or to third parties or require us to cease using the technology in dispute. 

18 

 
 
 
 
 
 
 
 
 
U.S.  and  foreign  patent  rights  and  other  proprietary  rights  exist  that  are  owned  by  third  parties  and  relate  to  pharmaceutical 
compositions and reagents, medical devices and equipment and methods for preparation, packaging and delivery of pharmaceutical 
compositions. We  cannot  predict  with  any certainty  which,  if  any,  of  these  rights  will  be  considered  relevant  to our  technology  by 
authorities in the various jurisdictions where such rights exist, nor can we predict with certainty which, if any, of these rights will or 
may be asserted against us by third parties. We could incur substantial costs in defending ourselves and our partners against any such 
claims.  Furthermore, parties making  such  claims  may  be able  to  obtain injunctive or  other  equitable relief, which  could  effectively 
block  our  ability  to  develop  or  commercialize  some  or  all  of  our  products  in  the  U.S.  and  abroad  and  could  result  in  the  award  of 
substantial damages. In the event of a claim of infringement, we or our partners may be required to obtain one or more licenses from 
third  parties.  There  can  be  no  assurance  that  we  can  obtain  a  license  to  any  technology  that  we  determine  we  need  on  reasonable 
terms, if at all, or that we could develop or otherwise obtain alternative technology. The failure to obtain licenses if needed may have a 
material adverse effect on our business, results of operations and financial condition. 

We also rely on trade secret protection for our confidential and proprietary information. No assurance can be given that we can 
meaningfully  protect  our  trade  secrets.  Others  may  independently  develop  substantially  equivalent  confidential  and  proprietary 
information or otherwise gain access to, or disclose, our trade secrets. 

In certain situations in which we work with drugs covered by one or more patents, our ability to develop and commercialize our 
technologies may be affected by a limited or a complete lack of unfettered access to these proprietary drugs. Even if we believe we are 
free to work with a proprietary drug, we cannot guarantee we will not be accused of, or determined to be, infringing a third party’s 
rights  and  be  prohibited  from  working  with  the  drug  or  found  liable  for  damages.  Any  such  restriction  on  access  or  liability  for 
damages would have a material adverse effect on our business, results of operations and financial condition. 

It is our policy to require our employees and consultants, outside scientific collaborators, sponsored researchers and other advisors 
who  receive  confidential  information  from  us  to  execute  confidentiality  agreements  upon  the  commencement  of  employment  or 
consulting  relationships  with  us.  These  agreements  provide  that  all  confidential  information  developed  or  made  known  to  the 
individual during the course of the individual’s relationship with us is to be kept confidential and not disclosed to third parties except 
in specific circumstances. The agreements provide that all inventions conceived by an employee shall be our property. There can be no 
assurance, however, that these agreements will provide meaningful protection or adequate remedies for our trade secrets in the event 
of unauthorized use or disclosure of such information. 

Backlog 

In our partnered programs where we manufacture and supply our proprietary drug formulations, inventory is produced and sales 
are made pursuant to customer purchase orders for delivery. The volume of drug formulation actually purchased by our customers, as 
well as shipment schedules, are subject to frequent revisions that reflect changes in both the customers’ needs and product availability. 
In our partnered programs where we provide contract research services, those services are typically provided under a work plan that is 
subject to frequent revisions that change based on the development needs and status of the program. The backlog at a particular time is 
affected by a number of factors, including scheduled date of manufacture and delivery and development program status. In light of 
industry practice and our own experience, we do not believe that backlog as of any particular date is indicative of future results. 

Competition 

Competition  in  the  pharmaceutical  and  biotechnology  industry  is  intense  and  characterized  by  aggressive  research  and 
development and rapidly-evolving science, technology, and standards of medical care throughout the world. We frequently compete 
with  pharmaceutical  companies  and  other  institutions  with  greater  financial,  research  and  development,  marketing  and  sales, 
manufacturing  and  managerial  capabilities. We face  competition from these  companies  not  just  in product development  but  also in 
areas  such  as  recruiting  employees,  acquiring  technologies  that  might  enhance  our  ability  to  commercialize  products,  establishing 
relationships with certain research and academic institutions, enrolling patients in clinical trials and seeking program partnerships and 
collaborations with larger pharmaceutical companies. 

19 

 
 
 
 
 
 
 
 
 
 
Science and Technology Competition 

We believe that our proprietary and partnered products will compete with others in the market on the basis of one or more of the 
following parameters: efficacy, safety, ease of use and cost. We face intense science and technology competition from a multitude of 
technologies seeking to enhance the efficacy, safety and ease of use of approved drugs and new drug molecule candidates. A number 
of  the  products  in  our  pipeline  have  direct  and  indirect  competition  from  large  pharmaceutical  companies  and  biopharmaceutical 
companies. With our PEGylation and advanced polymer conjugate technologies, we believe we have competitive advantages relating 
to factors such as efficacy, safety, ease of use and cost for certain applications and molecules. We constantly monitor scientific and 
medical developments in order to improve our current technologies, seek licensing opportunities where appropriate, and determine the 
best applications for our technology platforms. 

In the fields of PEGylation and advanced polymer conjugate technologies, our competitors include The Dow Chemical Company, 
Enzon  Pharmaceuticals,  Inc.,  SunBio  Corporation,  Mountain  View  Pharmaceuticals,  Inc.,  Neose  Technologies,  Inc.,  and  NOF 
Corporation. Several other chemical, biotechnology and pharmaceutical companies may also be developing PEGylation technology, 
advanced  polymer  conjugate  technology  or  technologies  intended  to  deliver  similar  scientific  and  medical  benefits.  Some  of  these 
companies license or provide the technology to other companies, while others develop the technology for internal use. 

Product and Program Specific Competition 

Oral NKTR-118 (oral PEGylated naloxol) 

There are no oral drugs approved specifically for the treatment of opioid-induced constipation (OIC) or opioid bowel dysfunction 
(OBD). The only approved treatment for OIC is a subcutaneous treatment known as methylnaltrexone bromide marketed by Wyeth. 
Other current therapies that are utilized to treat OIC and OBD include over-the-counter laxatives and stool softeners, such as docusate 
sodium, senna, and milk of magnesia. These therapies do not address the underlying cause of constipation as a result of opioid use and 
are generally viewed as ineffective or only partially effective to treat the symptoms of OID and OBD. 

There are a number of companies developing potential products which are in various stages of clinical development and are being 
evaluated for the treatment of OIC and OBD in different patient populations. Potential competitors include Progenics Pharmaceuticals, 
Inc.,  Wyeth,  Adolor  Corporation,  GlaxoSmithKline,  Mundipharma  Int.  Limited,  Sucampo  Pharmaceuticals,  and  Takeda 
Pharmaceutical Company Limited. 

NKTR-102 (PEGylated irinotecan) 

There  are  a  number  of  chemotherapies  and  cancer  therapies  approved  today  and  in  clinical  development  for  the  treatment  of 
colorectal cancer. Approved therapies for the treatment of colorectal cancer include Eloxatin, Camptosar, Avastin, Erbitux, Vectibux, 
Xeloda, Adrucil, and Wellcovorin. These therapies are only partially effective in treating the disease. There are a number of drugs in 
various  stages  of  preclinical  and  clinical  development  from  companies  exploring  cancer  therapies  or  improved  chemotherapeutic 
agents to potentially treat colorectal cancer. If these drugs are approved, they could be competitive with NKTR-102. These include 
products  in  development  from  Bristol-Myers  Squibb  Company,  Pfizer,  Inc.,  GlaxoSmithKline  plc,  Antigenics,  Inc.,  F.  Hoffman-La 
Roche Ltd, Novartis AG, Cell Therapeutics, Inc., Neopharm Inc., Meditech Research Ltd, Alchemia Limited, Enzon Pharmaceuticals, 
Inc., and others. 

There are also a number of chemotherapies and cancer therapies approved today and in various stages of clinical development for 
ovarian,  breast  and  cervical  cancers  including  but  not  limited  to:  Avastin®  (bevacizumab),  Camptosar®  (irinotecan),  Ellence® 
(epirubicin),  Gemzar®  (gemcitabine),  Herceptin®  (trastuzumab),    Hycamtin®  (topotecan),    Paraplatin®  (carboplatin),  and  Taxol® 
(paclitaxel).  These  therapies  are  only  partially  effective  in  treating  ovarian,  breast  or  cervical  cancers.    Major  pharmaceutical  or 
biotechnology companies with approved drugs or drugs in development for these cancers include Bristol-Meyers Squibb, Genentech, 
Inc., GlaxoSmithKline plc, Pfizer, Inc., Eli Lilly & Co., and many others. 

BAY41-6551 (NKTR-061, Amikacin Inhale) 

There  are  currently  no  approved  drugs  on  the  market  for  adjunctive  treatment  or  prevention  of  Gram-negative  pneumonias  in 
mechanically ventilated patients which are also administered via the pulmonary route. The current standard of care includes approved 
intravenous antibiotics which are partially effective for the treatment of either hospital-acquired pneumonia or ventilator-associated 
pneumonia  in  patients  on  mechanical  ventilators.  These  drugs  include  drugs  that  fall  into  the  categories  of  antipseudomonal 
cephalosporins,  antipseudomonal  carbepenems,  beta-Lactam/beta-lactamase  inhibitors,  antipseudomonal  fluoroquinolones,  such  as 
Ciprofloxacin or levofloxacin, and aminoglycosides, such as amikacin, gentamycin or Tobramycin. 

20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Environment 

As a manufacturer of drug products for the U.S. market, we are subject to inspections by the FDA for compliance with cGMP and 
other  U.S.  regulatory  requirements,  including  U.S.  federal,  state  and  local  regulations  regarding  environmental  protection  and 
hazardous and controlled substance controls, among others. Environmental laws and regulations are complex, change frequently and 
have tended to become more stringent over time. We have incurred, and may continue to incur, significant expenditures to ensure we 
are in compliance with these laws and regulations. We would be subject to significant penalties for failure to comply with these laws 
and regulations. 

Employees and Consultants 

As  of  December  31,  2008,  after  the  completion  of  the  Novartis  asset  sale  transaction,  we  had  338  employees,  of  which  235 
employees were engaged in research and development, commercial operations and quality activities and 103 employees were engaged 
in general administration and business development. Of the 338 employees, 290 were located in the United States and 48 were located 
in  India  as  of  December  31,  2008.  We  have  a  number  of  employees  who  hold  advanced  degrees,  such  as  Ph.D.s.  None  of  our 
employees  are  covered  by  a  collective  bargaining  agreement,  and  we  have  experienced  no  work  stoppages.  We  believe  that  we 
maintain good relations with our employees. 

To complement our own expert professional staff, we utilize specialists in regulatory affairs, process engineering, manufacturing, 
quality assurance, clinical development and business development. These individuals include certain of our scientific advisors as well 
as independent consultants. 

Available Information 

Our website address is http://www.nektar.com. The information in, or that can be accessed through, our website is not part of this 
annual report on Form 10-K. Our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K and 
amendments  to  those  reports  are  available,  free  of  charge,  on  or  through  our  website  as  soon  as  reasonably  practicable  after  we 
electronically file such material with, or furnish it to, the Securities Exchange Commission (SEC). The public may read and copy any 
materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, D.C. 20549. Information on the 
operation of the Public Reference Room can be obtained by calling 1-800-SEC-0330. The SEC maintains an Internet site that contains 
reports, proxy and information statements and other information regarding our filings at www.sec.gov. 

EXECUTIVE OFFICERS OF THE REGISTRANT 

The following table sets forth the names, ages and positions of our executive officers as of February 1, 2009: 

Name 
Howard W. Robin 
John Nicholson 
Bharatt M. Chowrira, Ph.D., J.D. 
Randall W. Moreadith, M.D., Ph.D. 
Gil M. Labrucherie, J.D. 
Jillian B. Thomsen 

Position

 Age  
 56  Director, President and Chief Executive Officer 
 57  Senior Vice President and Chief Financial Officer 
 43  Senior Vice President and Chief Operating Officer  
 55  Senior Vice President, Drug Development and Chief Development Officer
 37  Senior Vice President, General Counsel and Secretary 
 43  Vice President and Chief Accounting Officer

Howard W. Robin has served as our Director, President and Chief Executive Officer since January 2007 and was appointed as a 
member of our Board of Directors in February 2007. Mr. Robin served as Chief Executive Officer, President and director of Sirna 
Therapeutics, Inc., a clinical-stage biotechnology company pioneering RNAi-based therapies for serious diseases and conditions, from 
July 2001 to November 2006 and served as their Chief Operating Officer, President and Director from January 2001 to June 2001. 
From  1991  to  2001,  Mr.  Robin  was  Corporate  Vice  President  and  General  Manager  at  Berlex  Laboratories,  Inc.,  the  U.S. 
pharmaceutical subsidiary of the German pharmaceutical firm Schering AG, and, from 1987 to 1991, he served as their Vice President 
of Finance and Business Development and Chief Financial Officer. From 1984 to 1987, Mr. Robin was Director of Business Planning 
and Development at Berlex and was a Senior Associate with Arthur Andersen LLP prior to joining Berlex. Since February 2006, Mr. 
Robin  has  served  as  a  member  of  the  Board  of  Directors  of  Acologix,  Inc.,  a  biopharmaceutical  company  focused  on  therapeutic 
compounds  for  the  treatment  of  osteo-renal  diseases.  He  received  his  B.S.  in  Accounting  and  Finance  from  Fairleigh  Dickinson 
University in 1974. 

21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
John Nicholson has served as our Senior Vice President and Chief Financial Officer since December 2007. Mr. Nicholson joined 
the Company as Senior Vice President of Corporate Development and Business Operations in October 2007 and was appointed Senior 
Vice  President  and  Chief  Financial  Officer  in  December  2007.  Before  joining  Nektar,  Mr.  Nicholson  spent  18  years  in  various 
executive  roles  at  Schering  Berlin,  Inc.,  the  U.S.  management  holding  company  of  Bayer  Schering  Pharma  AG,  a  pharmaceutical 
company. From 1997, he served as Schering Berlin Inc.’s Vice President of Corporate Development and Treasurer. Since 2001, he 
served concurrently as the President of Schering Berlin Insurance Co., and since 2007, he served concurrently as President of Bayer 
Pharma Chemicals Co. and Schering Berlin Capital Corp. Mr. Nicholson holds a B.B.A. from the University of Toledo. 

Bharatt M. Chowrira, Ph.D., J.D. has served as our Senior Vice President and Chief Operating Officer since May 2008, as well as 
Chairman  of  Nektar  Therapeutics  India  Pvt.  Ltd.  From  January  2007  until  May  2008,  Dr.  Chowrira,  served  as  Executive  Director, 
Licensing  /  External  Research  at  Merck  &  Co.,  Inc.,  a  global  pharmaceutical  company.  From  January  2005  through  2006,  Dr. 
Chowrira served as Chief Patent Counsel and Vice President, Legal Affairs of Sirna Therapeutics, Inc., a clinical-stage biotechnology 
company pioneering RNAi-based therapies for serious diseases and conditions that was acquired by Merck & Co. in January 2007. In 
that position, Dr. Chowrira was responsible for all legal and business licensing activities and general corporate matters. From January 
2002 until December 2004, Dr. Chowrira was Vice President of Legal Affairs, Licensing and Patent Counsel at Sirna Therapeutics. 
Dr. Chowrira joined Sirna Therapeutics (then operating as Ribozyme Pharmaceuticals Inc.) in 1993 as a scientist. Dr. Chowrira holds 
a J.D. from the College of Law at the University of Denver and a Ph.D. in Microbiology and Molecular Genetics from the University 
of Vermont. Dr. Chowrira is a member of the Colorado Bar Association, admitted to practice in California as a registered in-house 
counsel,  and  is  a  registered  patent  attorney  before  the  U.S.  Patent  and  Trademark  Office.  He  is  also  a  member  of  the  American 
Intellectual Property Law Association, Licensing Executive Society and the Association of Corporate Counsel. 

Randall W. Moreadith, M.D., Ph.D. has served as our Senior Vice President, Drug Development and Chief Development Officer 
since  August  2008.  From  January  2006  until  August  2008,  Dr.  Moreadith,  served  as  Executive  Vice  President  and  Chief  Medical 
Officer  of  Cardium  Therapeutics,  a  company  developing  therapeutic  products  and  devices  for  cardiovascular,  ischemic  and  related 
indications. While at Cardium, he also served as Chief Medical Officer of InnerCool Therapies, a company focused on technology to 
warm and cool patients, and the Tissue Repair Company, a company focused on the development of growth factor therapeutics that 
promote tissue repair and regeneration, both of which are wholly-owned subsidiaries of Cardium and were acquired by Cardium in 
2006.  From  August  2004  to  December  2005,  Dr.  Moreadith  served  as  Chief  Medical  Officer  of  Renovis,  Inc.,  a  company  that 
developed  drugs  to  treat  neurological  diseases  and  disorders.  He  was  a  cofounder  of  ThromboGenics  Ltd.,  a  company  developing 
biotherapeutics for the treatment of vascular diseases, including acute ischemic stroke, and served as ThromboGenics’ President and 
Chief  Operating  Officer  from  December  1998  to  December  2003.  From  April  1996  to  February  1997,  Dr.  Moreadith  served  as 
Principal  Medical  Officer  of  Quintiles,  Inc.  and  was  also  a  co-founder  of  the  Cardiovascular  Therapeutics  Group.  He  received  his 
M.D. from Duke University and his Ph.D. from Johns Hopkins University, and was a Howard Hughes Medical Institute Postdoctoral 
Fellow  in  Genetics  at  Harvard  Medical  School.  His  faculty  appointments  include  the  University  of  Texas  Southwestern  Medical 
Center, where he was an Established Investigator of the American Heart Association. 

Gil M. Labrucherie has served as our Senior Vice President, General Counsel and Secretary since April 2007, responsible for all 
aspects of our legal affairs. Mr. Labrucherie served as our Vice President, Corporate Legal from October 2005 through April 2007. 
From October 2000 to September 2005, Mr. Labrucherie was Vice President of Corporate Development at E2open. While at E2open, 
Mr. Labrucherie was responsible for global corporate alliances and merger and acquisition activity. Prior to E2open, he was the Senior 
Director  of  Corporate  Development  at  AltaVista  Company,  an  Internet  search  company,  where  he  was  responsible  for  strategic 
partnerships and mergers and acquisitions. Mr. Labrucherie began his career as an associate in the corporate practice of the law firm of 
Wilson Sonsini Goodrich & Rosati and Graham & James (DLA Piper Rudnick). Mr. Labrucherie received his J.D. from the Berkeley 
Law School and a B.A. from the University of California Davis. 

Jillian B. Thomsen has served as our Vice President Finance and Chief Accounting Officer since April 2008. Ms. Thomsen joined 
Nektar  in  March  2006  as  our  Vice  President  Finance  and  Corporate  Controller.  Before  joining  Nektar,  Ms.  Thomsen  was  Vice 
President Finance and Deputy Corporate Controller of Calpine Corporation from September 2002 to February 2006. Previously, Ms. 
Thomsen is a certified public accountant and was a senior manager at Arthur Andersen LLP, where she worked from 1990 to 2002, 
and specialized in audits of multinational consumer products, life sciences, manufacturing and energy companies. Ms. Thomsen holds 
a Masters of Accountancy from the University of Denver and a B.A. in Business Economics from Colorado College. 

22 

 
 
 
 
 
 
 
Item 1A. Risk Factors  

We  are providing  the  following  cautionary discussion  of  risk  factors,  uncertainties  and  possibly  inaccurate  assumptions  that  we 
believe are relevant to our business. These are factors that, individually or in the aggregate, we think could cause our actual results to 
differ  materially  from  expected  and  historical  results  and  our  forward-looking  statements.  We  note  these  factors  for  investors  as 
permitted by Section 21E of the Exchange Act and Section 27A of the Securities Act. You should understand that it is not possible to 
predict or identify all such factors. Consequently, you should not consider this section to be a complete discussion of all potential risks 
or uncertainties that may substantially impact our business. 

Risks Related to Our Business 

Drug  development  is  an  inherently  uncertain  process  and  there  is  a  high  risk  of  failure  at  every  stage  of  development  and 
development failures can significantly harm our business. 

We have a number of proprietary product candidates and partnered product candidates in research and development ranging from 
the  early  discovery  research  phase  through  preclinical  testing  and  clinical  trials.  Preclinical  testing  and  clinical  trials  are  long, 
expensive and a highly uncertain processes. It will take us, or our collaborative partners, several years to complete clinical trials. Drug 
development is an uncertain scientific and medical endeavor and failure can unexpectedly occur at any stage of clinical development. 
Typically, there is a high rate of attrition for product candidates in preclinical and clinical trials due to scientific feasibility, safety, 
efficacy, changing standards of medical care and other variables. 

Even with success in preclinical testing and clinical trials, the risk of clinical failure remains high prior to regulatory approval. 

A number of companies in the pharmaceutical and biotechnology industries have suffered significant unforeseen setbacks in later 
stage clinical trials (i.e., Phase 2 or Phase 3 trials) due to factors such as inconclusive efficacy results and adverse medical events, even 
after achieving positive results in earlier trials that were satisfactory both to them and to reviewing regulatory agencies. Although we 
recently  announced positive preliminary  Phase  2  clinical  results  for  NKTR-118  (oral  PEGylated naloxol),  there  are  still  substantial 
risks associated with the future outcome of a Phase 3 clinical trial and the regulatory review process. In addition, although NKTR-102 
(PEGylated  irinotecan)  continues  in  active  Phase  2  clinical  development,  there  remains  a  significant  uncertainty  that  this  drug 
candidate will eventually receive regulatory approval or this drug candidate will be a commercial success even if approved. The risk 
of failure is increased for our product candidates that are based on new technologies such as the application of our advanced polymer 
conjugate technology to small  molecules including without limitation NKTR-118 and NKTR-102. If our PEGylation and advanced 
polymer  conjugate  technologies  fail  to  generate  new  drug  candidates  with  positive  clinical  trial  results  and  approved  drugs,  our 
business would be materially harmed. 

If we are unable to establish and maintain collaboration partnerships on attractive commercial terms, our business, results of 
operations and financial condition could suffer. 

We intend to continue to seek partnerships with pharmaceutical and biotechnology partners to fund a portion of our research and 
development expenses and develop and commercialize our product candidates. For example, following the recent announcement of 
our  preliminary  Phase  2  clinical  results  for  Oral  NKTR-118  (oral  PEGylated  naloxol),  we  will  be  actively  seeking  a  collaboration 
partner  for  this  program.  Our  ability  to  successfully  conclude  a  collaboration  partnership  for  Oral  NKTR-118  on  commercially 
favorable  terms,  or  at  all,  will  have  a  significant  impact  on  our  business  and  financial  position  in  2009.  The  timing  of  any  future 
partnership, as well as the terms and conditions of the partnership, will affect our ability to benefit from the relationship. If we are 
unable  to  fund  suitable  partners  or  to  negotiate  collaborative  arrangements  with  favorable  commercial  terms  with  respect  to  our 
existing and future product candidates or the licensing of our technology, or if any arrangements we negotiate, or have negotiated, are 
terminated, our business, results of operations and financial condition could suffer. While we may enter new collaboration or license 
agreements in 2009, we currently expect revenue to decrease in 2009 as a result of the termination of our collaboration agreements 
with  Novartis  Vaccines  and  Diagnostics,  Inc.  for  Tobramycin  inhalation  powder  (TIP)  and  our  assignment  of  our  rights  and 
obligations, other than certain royalty rights, related to the Cipro Inhale program partnered with Schering Pharma AG. Revenue from 
the TIP and Cipro Inhale collaboration agreements was $13.7 million and $11.7 million, or 15% and 13%, respectively for the year 
ended December 31, 2008. We will not receive any revenue related to these programs in 2009. 

23 

 
 
 
 
 
 
 
 
 
 
 
The commercial potential of a drug candidate in development is difficult to predict and if the market size for a new drug is 
significantly smaller than we anticipated, it could significantly and negatively impact our revenue, results of operations and 
financial condition. 

It is very difficult to estimate the commercial potential of product candidates due to factors such as safety and efficacy compared 
to other available treatments, including potential generic drug alternatives with similar efficacy profiles, changing standards of care, 
third party payer reimbursement, patient and physician preferences and the availability of competitive alternatives that may emerge 
either  during  the  long  drug  development  process  or  after  commercial  introduction.  If  due  to  one  or  more  of  these  risks  the  market 
potential for a product candidate is lower than we anticipated, it could significantly and negatively impact the commercial terms of 
any collaboration partnership potential for such product candidate or, if we have already entered into a collaboration for such drug 
candidate,  the  revenue  potential  from  royalty  and  milestones  could  be  significantly  diminished  and  would  negatively  impact  our 
revenue, results of operations and financial condition. 

Our  revenue  is  exclusively  derived  from  our  collaboration  agreements,  which  can  result  in  significant  fluctuation  in  our 
revenue from period to period, and our past revenue is therefore not necessarily indicative of our future revenue. 

Our revenue is derived from our collaboration agreements with partners, under which we may receive contract research payments, 
milestone  payments  based  on  clinical  progress,  regulatory  progress  or  net  sales  achievements,  royalties  or  manufacturing  revenue. 
Bayer (including Bayer Healthcare LLC and Bayer Schering Pharma AG), UCB Pharma, Novartis, and Roche represented 24%, 16%, 
15%, and 14%, respectively, of our total revenue during the year ended December 31, 2008. No other partner accounted for more than 
10% of our total revenue during the year ended December 31, 2008. Significant variations in the timing of receipt of cash payments 
and  our  recognition  of  revenue  can  result  from  the  nature  of  significant  milestone  payments  based  on  the  execution  of  new 
collaboration agreements, the timing of clinical, regulatory or sales events which result in single milestone payments and the timing 
and  success  of  the  commercial  launch  of  new  drugs  by  our  collaboration  partners.  The  amount  of  our  revenue  derived  from 
collaboration  agreements  in  any  given  period  will  depend  on  a  number  of  unpredictable  factors,  including  our  ability  to  find  and 
maintain suitable collaboration partners, the timing of the negotiation and conclusion of collaboration agreements with such partners, 
whether and when we or our partner achieve clinical and sales milestones, whether the partnership is exclusive or whether we can seek 
other partners, the timing of regulatory approvals and the market introduction of new drugs, as well as other factors. 

If our partners, on which we depend to obtain regulatory approvals for and to commercialize our partnered products, are not 
successful, or if such collaborations fail, the development or commercialization of our partnered products may be delayed or 
unsuccessful. 

When we sign a collaborative development agreement or license agreement to develop a product candidate with a pharmaceutical 

or biotechnology company, the pharmaceutical or biotechnology company is generally expected to: 

•  design and conduct large scale clinical studies;  

•  prepare and file documents necessary to obtain government approvals to sell a given product candidate; and/or 

•  market and sell our products when and if they are approved.  

Our reliance on collaboration partners poses a number of risks to our business, including risks that: 

•  we  may  be  unable  to  control  whether,  and  the  extent  to  which,  our  partners  devote  sufficient  resources  to  the  development 

programs or commercial efforts; 

•  disputes may arise in the future with respect to the ownership of rights to technology or intellectual property developed with 

partners; 

•  disagreements  with  partners  could  lead  to  delays  in,  or  termination  of,  the  research,  development  or  commercialization  of 

product candidates or to litigation or arbitration; 

•  contracts with our partners may fail to provide us with significant protection, or to be effectively enforced, in the event one of 

our partners fails to perform; 

24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•  partners have considerable discretion in electing whether to pursue the development of any additional product candidates and 

may pursue alternative technologies or products either on their own or in collaboration with our competitors; 

•  partners with marketing rights may choose to devote fewer resources to the marketing of our partnered products than they do to 

products of their own development; 

• 

the timing and level of resources that our partners dedicate to the development program will affect the timing and amount of 
revenue we receive; 

•  partners may be unable to pay us as expected; and  

•  partners  may  terminate  their  agreements  with  us  unilaterally  for  any  or  no  reason,  in  some  cases  with  the  payment  of  a 

termination fee penalty and in other cases with no termination fee penalty. 

Given these risks, the success of our current and future partnerships is highly uncertain. We have entered into collaborations in the 
past  that  have  been  subsequently  terminated,  such  as  our  collaboration  with  Pfizer  for  the  development  and  commercialization  of 
inhaled insulin that was terminated by Pfizer in November 2007. If other collaborations are suspended or terminated, our ability to 
commercialize  certain  other  proposed  product  candidates  could  also  be  negatively  impacted.  If  our  collaborations  fail,  our  product 
development or commercialization of product candidates could be delayed or cancelled, which would negatively impact our business, 
results of operations and financial condition. 

If we or our partners do not obtain regulatory approval for our product candidates on a timely basis, if at all, or if the terms of 
any approval impose significant restrictions or limitations on use, our business, results of operations and financial condition 
will be negatively affected. 

We  or  our  partners  may  not  obtain  regulatory  approval  for  product  candidates  on  a  timely  basis,  if  at  all,  or  the  terms  of  any 
approval  (which  in  some  countries  includes  pricing  approval)  may  impose  significant  restrictions  or  limitations  on  use.  Product 
candidates must undergo rigorous animal and human testing and an extensive FDA mandated or equivalent foreign authorities’ review 
process for safety and efficacy. This process generally takes a number of years and requires the expenditure of substantial resources. 
The  time  required  for  completing  testing  and  obtaining  approvals  is  uncertain,  and  the  FDA  and  other  U.S.  and  foreign  regulatory 
agencies have substantial discretion to terminate clinical trials, require additional testing, delay or withhold registration and marketing 
approval and mandate product withdrawals, including recalls. In addition, undesirable side effects caused by our product candidates 
could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restricted label or the delay 
or denial of regulatory approval by regulatory authorities. 

Even  if  we  or  our  partners  receive  regulatory  approval  of  a  product,  the  approval  may  limit  the  indicated  uses  for  which  the 
product may be marketed. Our partnered products that have obtained regulatory approval, and the manufacturing processes for these 
products, are subject to continued review and periodic inspections by the FDA and other regulatory authorities. Discovery from such 
review and inspection of previously unknown problems may result in restrictions on marketed products or on us, including withdrawal 
or recall of such products from the market, suspension of related manufacturing operations or a more restricted label. The failure to 
obtain timely regulatory approval of product candidates, any product marketing limitations or a product withdrawal would negatively 
impact our business, results of operations and financial condition. 

We  are  a  party  to  numerous  collaboration  agreements  and  other  significant  agreements,  including  in  connection  with  the 
Novartis  Pulmonary  Asset  Sale,  which  contain  complex  commercial  terms  that  could  result  in  disputes,  litigation  or 
indemnification liability that could adversely affect our business, results of operations and financial condition. 

We  currently  derive,  and  expect  to  derive  in  the  foreseeable  future,  all  of  our  revenue  from  collaboration  agreements  with 

biotechnology and pharmaceutical companies. These collaboration agreements contain complex commercial terms, including: 

• 

research  and  development  performance  and  reimbursement  obligations  for  our  personnel  and  other  resources  allocated  to 
partnered product development programs; 

•  clinical and commercial manufacturing agreements, some of which are priced on an actual cost basis for products supplied by 

us to our partners with complicated cost allocation formulas and methodologies; 

25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
• 

• 

intellectual property ownership allocation between us and our partners for improvements and new inventions developed during 
the course of the partnership; 

royalties on end product sales based on a number of complex variables, including net sales calculations, geography, patent life 
and other financial metrics; and 

• 

indemnity obligations for third-party intellectual property infringement, product liability and certain other claims. 

In addition, we have also entered into complex commercial agreements with Novartis in connection with the sale of certain assets 
related to our pulmonary business, associated technology and intellectual property to Novartis (Novartis Pulmonary Asset Sale), which 
was completed on December 31, 2008. Our agreements with Novartis contain complex representations and warranties, covenants and 
indemnification obligations that could result in substantial future liability and harm our financial condition if we breach any of our 
agreements with Novartis or any third party agreements impacted by this complex transaction. In addition to the asset purchase, we 
entered  an  exclusive  license  agreement  with  Novartis  Pharma  pursuant  to  which  Novartis  Pharma  grants  back  to  us  an  exclusive, 
irrevocable, perpetual, royalty-free and worldwide license under certain specific patent rights and other related intellectual property 
rights necessary for us to satisfy certain continuing contractual obligations to third parties, including in connection with development, 
manufacture, sale and commercialization activities related to our partnered program for BAY41-6551 with Bayer Healthcare LLC . 
We also entered into a service agreement pursuant to which we have subcontracted to Novartis certain services to be performed related 
to our partnered program for BAY41-6551 and a transition services agreement pursuant to which Novartis and we will provide each 
other  with  specified  services  for  limited  time  periods  following  the  closing  of  the  Novartis  Pulmonary  Asset  Sale  to  facilitate  the 
transition of the acquired assets and business from us to Novartis. 

From time to time, we have informal dispute resolution discussions with third parties regarding the appropriate interpretation of 
the complex commercial terms contained in our agreements. One or more disputes may arise in the future regarding our collaborative 
contracts or the Novartis Pulmonary Asset Purchase that may ultimately result in costly litigation and unfavorable interpretation of 
contract terms, which would have a material adverse impact on our business, results of operations or financial condition. 

If  we  or  our  partners  are  not  able  to  manufacture  drugs  in  quantities  and  at  costs  that  are  commercially  feasible,  our 
proprietary  and  partnered  product  candidates  may  experience  clinical  delays  or  constrain  commercial  supply  which  could 
significantly harm our business. 

If  we  are  not  able  to  scale-up  manufacturing  to  meet  the  drug  quantities  required  to  support  large  clinical  trials  or  commercial 
manufacturing in a timely manner or at a commercially reasonable cost, we risk delaying our clinical trials or those of our partners and 
may  breach  contractual  obligations  and  incur  associated  damages  and  costs.  In  some  cases,  we  may  subcontract  manufacturing  or 
other  services.  For  instance,  we  entered  a  service  agreement  with  Novartis  pursuant  to  which  we  subcontract  to  Novartis  certain 
important  services  to  be  performed  in  relation  to  our  partnered  program  for  BAY41-6551  with  Bayer  Healthcare  LLC.  If  our 
subcontractors do not dedicate adequate resources to our programs, we risk breach of our obligations to our partners. Building and 
validating large scale clinical or commercial-scale manufacturing facilities and processes, recruiting and training qualified personnel 
and obtaining necessary regulatory approvals is complex, expensive and time consuming. In the past we have encountered challenges 
in  scaling  up  manufacturing  to  meet  the  requirements  of  large  scale  clinical  trials  without  making  modifications  to  the  drug 
formulation, which may cause significant delays in clinical development. Failure to manufacture products in quantities or at costs that 
are commercially feasible could cause us not to meet our supply requirements, contractual obligations or other requirements for our 
proprietary product candidates and, as a result, would negatively impact our business, results of operations and financial condition. 

We purchase some of the raw starting material for drugs and drug candidates from a single source or a limited number of 
suppliers,  and  the  partial  or  complete  loss  of  one  of  these  suppliers  could  cause  production  delays,  clinical  trial  delays, 
substantial loss of revenue and contract liability to third parties. 

We  often  face  very  limited  supply  of  a  critical  raw  material  that  can  only  be  obtained  from  a  single,  or  a  limited  number  of, 
suppliers, which could cause production delays, clinical trial delays, substantial lost revenue opportunity or contract liability to third 
parties.  For  example,  there  are  only  a  limited  number  of  qualified  suppliers  for  the  raw  materials  included  in  our  PEGylation  and 
advanced  polymer  conjugate  drug  formulations,  and  any  interruption  in  supply  or  failure  to  procure  such  raw  materials  on 
commercially feasible terms could harm our business by delaying our clinical trials, impeding commercialization of approved drugs or 
increasing operating loss to the extent we cannot pass on increased costs to a manufacturing customer. 

26 

 
 
 
 
 
 
 
 
 
 
 
 
 
The  current  crisis  in  global  credit  and  financial  markets  could  materially  and  adversely  affect  our  business,  results  of 
operations and financial condition. 

Financial  markets  have  experienced  extreme  disruption  in  recent  months,  including,  among  other  things,  extreme  volatility  in 
security  prices,  severely  diminished  liquidity  and  credit  availability,  rating  downgrades  of  certain  investments  and  declining 
valuations. There could be further deterioration in credit and financial markets and confidence in economic conditions. While we do 
not currently require access to credit markets to finance our operations, these economic developments are likely to affect our business 
in various ways. The current tightening of credit in financial markets may harm the ability of our partners to finance operations and 
they may dedicate fewer resources to our partnered product candidates, which could result in delays in the regulatory approval process 
and increase the estimated time to commercialization of our product candidates. Since we expect that licensing deals, comprised of a 
combination of upfront and contract research fees, milestones, manufacturing product sales and product royalties, will represent the 
majority  of  our  revenue  in  2009,  such  delays  could  harm  our  business,  results  of  operations  and  financial  condition.  Further,  our 
partners may be unable to continue to develop our partnered product candidates, and some partners may terminate our collaborations. 
In  addition,  to  date  all  of  our  revenue  has  come  from  payments  from  partners,  and  it  may  become  more  difficult  to  collect  any 
payments due from our partners on a timely basis, or at all. The economic crisis  may also affect the ability of suppliers of starting 
materials  to  meet  our  capacity  requirements  or  cause  them  to  increase  the  price  of  starting  materials.  We  are  unable  to  predict  the 
likely  duration  and  severity  of  the  current  disruption  in  financial  markets  and  adverse  economic  conditions  in  the  U.S.  and  other 
countries. As a result of the worldwide economic slowdown, it is extremely difficult for us and our partners to forecast future sales 
levels based on historical information and trends. 

If  any  of  our  pending  patent  applications  do  not  issue,  or  are  deemed  invalid  following  issuance,  we  may  lose  valuable 
intellectual property protection. 

The  patent  positions  of  pharmaceutical,  medical  device  and  biotechnology  companies,  such  as  ours,  are  uncertain  and  involve 
complex  legal  and  factual  issues.  We  own  approximately  80  U.S.  and  approximately  335  foreign  patents  and  a  number  of  patent 
applications  pending  that  cover  various  aspects  of  our  technologies.  We  have  filed  patent  applications,  and  plan  to  file  additional 
patent  applications,  covering  various  aspects  of  our  PEGylation  and  advanced  polymer  conjugate  technologies.  There  can  be  no 
assurance that patents that have issued will be valid and enforceable or that patents for which we apply will issue with broad coverage, 
if at all. The coverage claimed in a patent application can be significantly reduced before the patent is issued and, as a consequence, 
our patent applications may result in patents with narrow coverage. Since publication of discoveries in scientific or patent literature 
often lag behind the date of such discoveries, we cannot be certain that we were the first inventor of inventions covered by our patents 
or patent applications. As part of the patent application process, we may have to participate in interference proceedings declared by the 
U.S. Patent and Trademark Office, which could result in substantial cost to us, even if the eventual outcome is favorable. Further, an 
issued patent may undergo further proceedings to limit its scope so as not to provide meaningful protection and any claims that have 
issued,  or  that  eventually  issue,  may  be  circumvented  or  otherwise  invalidated.  Any  attempt  to  enforce  our  patents  or  patent 
application rights could be time consuming and costly. An adverse outcome could subject us to significant liabilities to third parties, 
require disputed rights to be licensed from or to third parties or require us to cease using the technology in dispute. Even if a patent is 
issued and enforceable, because development and commercialization of pharmaceutical products can be subject to substantial delays, 
patents may expire early and provide only a short period of protection, if any, following commercialization of related products. 

There  are  many  laws,  regulations  and  judicial  decisions  that  dictate  and  otherwise  influence  the  manner  in  which  patent 
applications are filed and prosecuted and in which patents are granted and enforced. Changes to these laws, regulations and judicial 
decisions  are  subject  to  influences  outside  of  our  control  and  may  negatively  affect  our  business,  including  our  ability  to  obtain 
meaningful patent coverage or enforcement rights to any of our issued patents. New laws, regulations and judicial decisions may be 
retroactive  in  effect,  potentially  reducing  or  eliminating  our  ability  to  implement  our  patent-related  strategies  to  these  changes. 
Changes to laws, regulations and judicial decisions that affect our business are often difficult or impossible to foresee, which limits 
our ability to adequately adapt our patent strategies to these changes. 

We may not be able to obtain intellectual property licenses related to the development of our technology on a commercially 
reasonable basis, if at all. 

Numerous  pending  and  issued  U.S.  and  foreign  patent  rights  and  other  proprietary  rights  owned  by  third  parties  relate  to 
pharmaceutical compositions, medical devices and equipment and methods for preparation, packaging and delivery of pharmaceutical 
compositions.  We  cannot  predict  with  any  certainty  which,  if  any,  patent  references  will  be  considered  relevant  to  our  or  our 
collaborative partners’ technology by authorities in the various jurisdictions where such rights exist, nor can we predict with certainty 
which, if any, of these rights will or may be asserted against us by third parties. There can be no assurance that we can obtain a license 
to  any  technology  that  we determine  we need on  reasonable  terms,  if at  all,  or  that we  could develop or otherwise  obtain  alternate 
technology. If we are required to enter into a license with a third party, our potential economic benefit for the products subject to the 
license will be diminished. The failure to obtain licenses on commercially reasonable terms, or at all, if needed, would have a material 
adverse effect on us. 

27 

 
 
 
 
 
 
 
 
 
We rely on trade secret protection and other unpatented proprietary rights for important proprietary technologies, and any 
loss of such rights could harm our business, results of operations and financial condition. 

We rely on trade secret protection for our confidential and proprietary information. No assurance can be given that others will not 
independently develop substantially equivalent confidential and proprietary information or otherwise gain access to our trade secrets 
or disclose such technology, or that we can meaningfully protect our trade secrets. In addition, unpatented proprietary rights, including 
trade secrets and know-how, can be difficult to protect and may lose their value if they are independently developed by a third party or 
if their secrecy is lost. Any loss of trade secret protection or other unpatented proprietary rights could harm our business, results of 
operations and financial condition. 

We  expect  to  continue  to  incur  substantial  losses  and  negative  cash  flow  from  operations  and  may  not  achieve  or  sustain 
profitability in the future. 

In the year ended December 31, 2008, we reported net losses of $34.3 million. If and when we achieve profitability depends upon 
a  number  of  factors,  including  the  timing  and  recognition  of  milestone  payments  and  license  fees  received,  the  timing  of  revenue 
under collaboration agreements, the amount of investments we make in our proprietary product candidates and the regulatory approval 
and market success of our product candidates. We may not be able to achieve and sustain profitability. 

Other factors that will affect whether we achieve and sustain profitability include our ability, alone or together with our partners, 

to: 

•  develop  products  utilizing  our  technologies,  either  independently  or  in  collaboration  with  other  pharmaceutical  or  biotech 

companies; 

• 

receive necessary regulatory and marketing approvals;  

•  maintain or expand manufacturing at necessary levels;  

•  achieve market acceptance of our partnered products;  

• 

receive  royalties  on  products  that  have  been  approved,  marketed  or  submitted  for  marketing  approval  with  regulatory 
authorities; and 

•  maintain sufficient funds to finance our activities.  

If we do not generate sufficient cash flow through increased revenue or raising additional capital, we may not be able to meet 
our substantial debt obligations. 

As of December 31, 2008, we had cash, cash equivalents, short-term investments and investments in marketable securities valued 
at  approximately  $379.0  million  and  approximately  $242.6  million  of  indebtedness,  including  approximately  $215.0  million  in 
convertible  subordinated  notes  due  September  2012,  $21.6  million  in  capital  lease  obligations  and  $6.0  million  of  other  long-term 
liabilities.  We  expect  to  use  a  substantial  portion  of  our  cash  to  fund  our  ongoing  operations  over  the  next  few  years.  In  the  three 
months ended December 31, 2008, we repurchased approximately $100.0 million in par value of our 3.25% convertible subordinated 
notes for an aggregate purchase price of $47.8 million. 

Our substantial indebtedness has and will continue to impact us by:  

•  making it more difficult to obtain additional financing;  

•  constraining our ability to react quickly in an unfavorable economic climate; 

•  constraining our stock price; and  

•  constraining our ability to invest in our proprietary product development programs. 

28 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Currently, we are not generating positive cash flow. If we are unable to satisfy our debt service requirements, substantial liquidity 
problems could result. In relation to our convertible subordinated notes, since the market price of our common stock is significantly 
below the conversion price, the holders of our outstanding convertible subordinated notes are unlikely to convert the notes to common 
stock in accordance with the existing terms of the notes. If we do not generate sufficient cash from operations to repay principal or 
interest on our remaining convertible subordinated notes, or satisfy any of our other debt obligations, when due, we may have to raise 
additional  funds  from  the  issuance  of  equity  or  debt  securities  or  otherwise  restructure  our  obligations.  Any  such  financing  or 
restructuring may not be available to us on commercially acceptable terms, if at all. 

If we cannot raise additional capital, our financial condition will suffer.  

We have no material credit facility or other material committed sources of capital. To the extent operating and capital resources are 
insufficient to meet our future capital needs, we will have to raise additional funds from new collaboration partnerships or the capital 
markets to continue the marketing and development of our technologies and proprietary products. Such funds may not be available on 
favorable  terms,  if  at  all.  We  may  be  unable  to  obtain  suitable  new  collaboration  partners  on  attractive  terms  and  our  substantial 
indebtedness may  limit  our ability  to  obtain  additional  capital  markets  financing. If  adequate funds  are  not  available  on reasonable 
terms,  we  may  be  required  to  curtail  operations  significantly  or  obtain  funds  by  entering  into  financing,  supply  or  collaboration 
agreements  on  unattractive  terms.  Our  inability  to  raise  capital  could  harm  our  business  and  our  stock  price.  To  the  extent  that 
additional  capital  is  raised  through  the  sale  of  equity  or  convertible  debt  securities,  the  issuance  of  such  securities  would  result  in 
dilution to our stockholders. 

If  government  and  private  insurance  programs  do  not  provide  reimbursement  for  our  partnered  products  or  proprietary 
products,  those  products  will  not  be  widely  accepted,  which  would  have  a  negative  impact  on  our  business,  results  of 
operations and financial condition. 

In both domestic and foreign markets, sales of our partnered and proprietary products that have received regulatory approval will 
depend in part on market acceptance among physicians and patients, pricing approvals by government authorities and the availability 
of  reimbursement  from  third-party  payers,  such  as  government  health  administration  authorities,  managed  care  providers,  private 
health  insurers  and  other  organizations.  Such  third-party  payers  are  increasingly  challenging  the  price  and  cost  effectiveness  of 
medical products and services. Therefore, significant uncertainty exists as to the pricing approvals for, and the reimbursement status 
of, newly approved healthcare products. Moreover, legislation and regulations affecting the pricing of pharmaceuticals  may change 
before  regulatory  agencies  approve  our  proposed  products  for  marketing  and  could  further  limit  pricing  approvals  for,  and 
reimbursement of, our products from government authorities and third-party payers. A government or third-party payer decision not to 
approve  pricing  for,  or  provide  adequate  coverage  and  reimbursements  of,  our  products  would  limit  market  acceptance  of  such 
products. 

We  depend  on  third  parties  to  conduct  the  clinical  trials  for  our  proprietary  product  candidates  and  any  failure  of  those 
parties to fulfill their obligations could harm our development and commercialization plans. 

We depend on independent clinical investigators, contract research organizations and other third-party service providers to conduct 
clinical trials for our proprietary product candidates. Though we rely heavily on these parties for successful execution of our clinical 
trials  and  are  ultimately  responsible  for  the  results  of  their  activities,  many  aspects  of  their  activities  are  beyond  our  control.  For 
example, we are responsible for ensuring that each of our clinical trials is conducted in accordance with the general investigational 
plan  and  protocols  for  the  trial,  but  the  independent  clinical  investigators  may  prioritize  other  projects  over  ours  or  communicate 
issues regarding our products to us in an untimely manner. Third parties may not complete activities on schedule or may not conduct 
our clinical trials in accordance with regulatory requirements or our stated protocols. The early termination of any of our clinical trial 
arrangements, the failure of third parties to comply with the regulations and requirements governing clinical trials or our reliance on 
results  of  trials  that  we  have  not  directly  conducted  or  monitored  could  hinder  or  delay  the  development,  approval  and 
commercialization of our product candidates and would adversely affect our business, results of operations and financial condition. 

29 

 
 
 
 
 
 
 
 
 
Our manufacturing operations and those of our contract manufacturers are subject to governmental regulatory requirements, 
which, if not met, would have a material adverse effect on our business, results of operations and financial condition. 

We and our contract manufacturers are required in certain cases to maintain compliance with current good manufacturing practices 
(cGMP),  including  cGMP  guidelines  applicable  to  active  pharmaceutical  ingredients,  and  are  subject  to  inspections  by  the  FDA or 
comparable  agencies  in  other  jurisdictions  to  confirm  such  compliance.  We  anticipate  periodic  regulatory  inspections  of  our  drug 
manufacturing  facilities  and  the  manufacturing  facilities  of  our  contract  manufacturers  for  compliance  with  applicable  regulatory 
requirements. Any failure to follow and document our or our contract manufacturers’ adherence to such cGMP regulations or satisfy 
other  manufacturing  and  product  release  regulatory  requirements  may  lead  to  significant  delays  in  the  availability  of  products  for 
commercial  use  or  clinical  study,  result  in  the  termination  or  hold  on  a  clinical  study  or  delay  or  prevent  filing  or  approval  of 
marketing applications for our products. Failure to comply with applicable regulations may also result in sanctions being imposed on 
us, including fines, injunctions, civil penalties, failure of regulatory authorities to grant marketing approval of our products, delays, 
suspension  or  withdrawal  of  approvals,  license  revocation,  seizures  or  recalls  of  products,  operating  restrictions  and  criminal 
prosecutions, any of which could harm our business. The results of these inspections could result in costly manufacturing changes or 
facility  or  capital  equipment  upgrades  to  satisfy  the  FDA  that  our  manufacturing  and  quality  control  procedures  are  in  substantial 
compliance with cGMP. Manufacturing delays, for us or our contract manufacturers, pending resolution of regulatory deficiencies or 
suspensions would have a material adverse effect on our business, results of operations and financial condition. 

Significant competition for our polymer conjugate chemistry technology platforms, our partnered and proprietary products 
and product candidates could make our technologies, products or product candidates obsolete or uncompetitive, which would 
negatively impact our business, results of operations and financial condition. 

Our  PEGylation  and  advanced  polymer  conjugate  chemistry  platforms  and  our  partnered  and  proprietary  products  and  product 
candidates  compete  with  various  pharmaceutical  and  biotechnology  companies.  Competitors  of  our  PEGylation  and  polymer 
conjugate chemistry technologies include The Dow Chemical Company, Enzon Pharmaceuticals, Inc., SunBio Corporation, Mountain 
View  Pharmaceuticals,  Inc.,  Neose  Technologies,  Inc.,  and  NOF  Corporation.  Several  other  chemical,  biotechnology  and 
pharmaceutical companies may also be developing PEGylation technologies or technologies that have similar impact on target drug 
molecules. Some of these companies license or provide the technology to other companies, while others are developing the technology 
for internal use. 

There  are  several  competitors  for  our  proprietary  product  candidates  currently  in  development.  For  NKTR-061  (inhaled 
Amikacin), the current standard of care includes several approved intravenous antibiotics for the treatment of either hospital-acquired 
pneumonia or ventilator-associated pneumonia in patients on mechanical ventilators. For NKTR-118 (PEGylated naloxol), there are 
currently  several  alternative  therapies  used  to  address  opioid-induced  constipation  (OIC)  and  opioid-induced  bowel  dysfunction 
(OBD), including over-the-counter laxatives and stool softeners such as docusate sodium, senna and milk of magnesia. In addition, 
there  are  a  number  of  companies  developing  potential  products  which  are  in  various  stages  of  clinical  development  and  are  being 
evaluated  for  the  treatment  of  OIC  and  OBD  in  different  patient  populations,  including  Adolor  Corporation,  GlaxoSmithKline, 
Progenics Pharmaceuticals, Inc., Wyeth, Mundipharma Int. Limited, Sucampo Pharmaceuticals and Takeda Pharmaceutical Company 
Limited. For NKTR-102 (PEG-irinotecan), there are a number of approved therapies for the treatment of colorectal cancer, including 
Eloxatin, Camptosar, Avastin, Erbitux, Vectibux, Xeloda, Adrucil and Wellcovorin. In addition, there are a number of drugs in various 
stages  of  preclinical  and  clinical  development  from  companies  exploring  cancer  therapies  or  improved  chemotherapeutic  agents  to 
potentially treat colorectal cancer, including, but not limited to, products in development from Bristol-Myers Squibb Company, Pfizer, 
Inc.,  GlaxoSmithKline  plc,  Antigenics,  Inc.,  F.  Hoffmann-La  Roche  Ltd,  Novartis  AG,  Cell  Therapeutics,  Inc.,  Neopharm  Inc., 
Meditech Research Ltd, Alchemia Limited, Enzon Pharmaceuticals, Inc. and others. 

There can be no assurance that we or our partners will successfully develop, obtain regulatory approvals and commercialize next-
generation  or  new  products  that  will  successfully  compete  with  those  of  our  competitors.  Many  of  our  competitors  have  greater 
financial, research and development, marketing and sales, manufacturing and managerial capabilities. We face competition from these 
companies not just in product development but also in areas such as recruiting employees, acquiring technologies that might enhance 
our ability to commercialize products, establishing relationships with certain research and academic institutions, enrolling patients in 
clinical trials and seeking program partnerships and collaborations with larger pharmaceutical companies. As a result, our competitors 
may succeed in developing competing technologies, obtaining regulatory approval or gaining market acceptance for products before 
we do. These developments could make our products or technologies uncompetitive or obsolete. 

30 

 
 
 
 
 
 
 
 
We could be involved in legal proceedings and may incur substantial litigation costs and liabilities that will adversely affect 
our business, results of operations and financial condition. 

From time to time, third parties have asserted, and may in the future assert, that we or our partners infringe their proprietary rights. 
The third party often bases its assertions on a claim that its patents cover our technology. Similar assertions of infringement could be 
based on future patents that may issue to third parties. In certain of our agreements with our partners, we are obligated to indemnify 
and hold harmless our partners from intellectual property infringement, product liability and certain other claims, which could cause 
us  to  incur  substantial  costs  if  we  are  called  upon  to  defend  ourselves  and  our  partners  against  any  claims.  If  a  third  party  obtains 
injunctive or other equitable relief against us or our partners, they could effectively prevent us, or our partners, from developing or 
commercializing, or deriving revenue from, certain products or product candidates in the U.S. and abroad. For instance, F. Hoffmann-
La Roche Ltd, to which we license our proprietary PEGylation reagent for use in the MIRCERA product, was a party to a significant 
patent  infringement  lawsuit  brought  by  Amgen  Inc.  related  to  Roche’s  proposed  marketing  and  sale  of  MIRCERA  to  treat 
chemotherapy  anemia  in  the  U.S.  Amgen  prevailed  in  this  lawsuit  and  a  U.S.  federal  district  court  issued  an  injunction  preventing 
Roche from marketing and selling MIRCERA in the U.S. Third-party claims could also result in the award of substantial damages to 
be paid by us or a settlement resulting in significant payments to be made by us. For instance, a settlement might require us to enter a 
license agreement under which we pay substantial royalties to a third party, diminishing our future economic returns from the related 
product. In 2006, we entered into a litigation settlement related to an intellectual property dispute with the University of Alabama in 
Huntsville pursuant to which we paid $11.0 million and agreed to pay an additional $10.0 million in equal $1.0 million installments 
over  ten  years  ending  with  the  last  payment  due  on  July  1,  2016.  We  cannot  predict  with  certainty  the  eventual  outcome  of  any 
pending or future litigation. Costs associated with such litigation, substantial damage claims, indemnification claims or royalties paid 
for licenses from third parties could have a material adverse effect on our business, results of operations and financial condition. 

If product liability lawsuits are brought against us, we may incur substantial liabilities. 

The  manufacture,  clinical  testing,  marketing  and  sale  of  medical  products  involve  inherent  product  liability  risks.  If  product 
liability costs exceed our product liability insurance coverage, we may incur substantial liabilities that could have a severe negative 
impact on our financial position. Whether or not we are ultimately successful in any product liability litigation, such litigation would 
consume  substantial  amounts  of  our  financial  and  managerial  resources  and  might  result  in  adverse  publicity,  all  of  which  would 
impair  our  business.  Additionally,  we  may  not  be  able  to  maintain  our  clinical  trial  insurance  or  product  liability  insurance  at  an 
acceptable cost, if at all, and this insurance may not provide adequate coverage against potential claims or losses. 

Our future depends on the proper management of our current and future business operations and their associated expenses. 

Our  business  strategy  requires  us  to  manage  our  business  to  provide  for  the  continued  development  and  potential 
commercialization of our proprietary and partnered product candidates. Our strategy also calls for us to undertake increased research 
and  development  activities  and  to  manage  an  increasing  number  of  relationships  with  partners  and  other  third  parties,  while 
simultaneously managing the expenses generated by these activities. If we are unable to manage effectively our current operations and 
any growth we may experience, our business, financial condition and results of operations may be adversely affected. If we are unable 
to effectively manage our expenses, we may find it necessary to reduce our personnel-related costs through further reductions in our 
workforce,  which  could  harm  our  operations,  employee  morale  and  impair  our  ability  to  retain  and  recruit  talent.  Furthermore,  if 
adequate funds are not available, we may be required to obtain funds through arrangements with partners or other sources that may 
require us to relinquish rights to certain of our technologies or products that we would not otherwise relinquish. 

We are dependent on our management team and key technical personnel, and the loss of any key manager or employee may 
impair our ability to develop our products effectively and may harm our business, operating results and financial condition. 

Our success largely depends on the continued services of our executive officers and other key personnel. The loss of one or more 
members  of  our  management  team  or  other  key  employees  could  seriously  harm  our  business,  operating  results  and  financial 
condition.  The  relationships  that  our  key  managers  have  cultivated  within  our  industry  make  us  particularly  dependent  upon  their 
continued  employment  with  us.  We  are  also  dependent  on  the  continued  services  of  our  technical  personnel  because  of  the  highly 
technical  nature  of  our  products  and  the  regulatory  approval  process.  Because  our  executive  officers  and  key  employees  are  not 
obligated to provide us with continued services, they could terminate their employment with us at any time without penalty. We do not 
have  any  post-employment  noncompetition  agreements  with  any  of  our  employees  and  do  not  maintain  key  person  life  insurance 
policies on any of our executive officers or key employees. 

31 

 
 
 
 
 
 
 
 
 
 
Because competition for highly qualified technical personnel is intense, we may not be able to attract and retain the personnel 
we need to support our operations and growth. 

We must attract and retain experts in the areas of clinical testing, manufacturing, regulatory, finance, marketing and distribution 
and  develop  additional  expertise  in  our  existing  personnel.  We  face  intense  competition  from  other  biopharmaceutical  companies, 
research and academic institutions and other organizations for qualified personnel. Many of the organizations with which we compete 
for  qualified  personnel  have  greater  resources  than  we  have.  Because  competition  for  skilled  personnel  in  our  industry  is  intense, 
companies  such  as  ours  sometimes  experience  high  attrition  rates  with  regard  to  their  skilled  employees.  Further,  in  making 
employment  decisions,  job  candidates  often  consider  the  value  of  the  stock  options  they  are  to  receive  in  connection  with  their 
employment. Our equity incentive plan and employee benefit plans may not be effective in motivating or retaining our employees or 
attracting  new  employees,  and  significant  volatility  in  the  price  of  our  stock  may  adversely  affect  our  ability  to  attract  or  retain 
qualified personnel. If we fail to attract new personnel or to retain and motivate our current personnel, our business and future growth 
prospects could be severely harmed. 

If earthquakes and other catastrophic events strike, our business may be harmed. 

Our  corporate  headquarters,  including  a  substantial  portion  of  our  research  and  development  operations,  are  located  in  the  San 
Francisco  Bay  Area,  a  region  known  for  seismic  activity  and  a  potential  terrorist  target.  In  addition,  we  own  facilities  for  the 
manufacture of products using our PEGylation and advanced polymer conjugate technologies in Huntsville, Alabama and lease offices 
in Hyderabad, India. There are no backup facilities for our manufacturing operations located in Huntsville, Alabama. In the event of 
an earthquake or other natural disaster or terrorist event in any of these locations, our ability to manufacture and supply materials for 
drug  candidates  in  development  and  our  ability  to  meet  our  manufacturing  obligations  to  our  customers  would  be  significantly 
disrupted  and  our  business,  results  of  operations  and  financial  condition  would  be  harmed.  Our  collaborative  partners  may  also  be 
subject  to  catastrophic  events,  such  as  hurricanes  and  tornadoes,  any  of  which  could  harm  our  business,  results  of  operations  and 
financial condition. We have not undertaken a systematic analysis of the potential consequences to our business, results of operations 
and financial condition from a major earthquake or other catastrophic event, such as a fire, sustained loss of power, terrorist activity or 
other  disaster,  and  do  not  have  a  recovery  plan  for  such  disasters.  In  addition,  our  insurance  coverage  may  not  be  sufficient  to 
compensate us for actual losses from any interruption of our business that may occur. 

We  have  implemented  certain  anti-takeover  measures,  which  make  it  more  difficult  to  acquire  us,  even  though  such 
acquisitions may be beneficial to our stockholders. 

Provisions of our certificate of incorporation and bylaws, as well as provisions of Delaware law, could make it more difficult for a 
third party to acquire us, even though such acquisitions may be beneficial to our stockholders. These anti-takeover provisions include: 

•  establishment of a classified board of directors such that not all members of the board may be elected at one time; 

• 

• 

lack  of  a  provision  for  cumulative  voting  in  the  election  of  directors,  which  would  otherwise  allow  less  than  a  majority  of 
stockholders to elect director candidates; 

the ability of our board to authorize the issuance of “blank check” preferred stock to increase the number of outstanding shares 
and thwart a takeover attempt; 

•  prohibition  on  stockholder  action  by  written  consent,  thereby  requiring  all  stockholder  actions  to  be  taken  at  a  meeting  of 

stockholders; 

•  establishment of advance notice requirements for nominations for election to the board of directors or for proposing matters 

that can be acted upon by stockholders at stockholder meetings; and 

• 

limitations on who may call a special meeting of stockholders.  

Further, we have in place a preferred share purchase rights plan, commonly known as a “poison pill.” The provisions described 
above,  our  “poison  pill”  and  provisions  of  Delaware  law  relating  to  business  combinations  with  interested  stockholders  may 
discourage, delay or prevent a third party from acquiring us. These provisions may also discourage, delay or prevent a third party from 
acquiring  a  large  portion  of  our  securities  or  initiating  a  tender  offer  or  proxy  contest,  even  if  our  stockholders  might  receive  a 
premium for their shares in the acquisition over the then current market prices. We also have a change of control severance benefits 
plan which provides for certain cash severance, stock award acceleration and other benefits in the event our employees are terminated 
(or,  in  some  cases,  resign  for  specified  reasons)  following  an  acquisition.  This  severance  plan  could  discourage  a  third  party  from 
acquiring us. 

32 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Risks Related to Our Securities 

The price of our common stock and senior convertible debt are expected to remain volatile. 

Our stock price is volatile. During the year ended December 31, 2008, based on closing bid prices on the NASDAQ Global Select 
Market,  our  stock  price  ranged  from  $2.83  to  $7.50  per  share.  We  expect  our  stock  price  to  remain  volatile.  In  addition,  as  our 
convertible senior notes are convertible into shares of our common stock, volatility or depressed prices of our common stock could 
have  a  similar  effect on  the trading price  of our notes. Also,  interest rate  fluctuations can  affect  the price of  our  convertible  senior 
notes. A variety of factors may have a significant effect on the market price of our common stock or notes, including: 

•  announcements of data from, or material developments in, our clinical trials or those of our competitors, including delays in 

clinical development, approval or launch; 

•  announcements by collaboration partners as to their plans or expectations related to products using our technologies; 

•  announcements or terminations of collaborative relationships by us or our competitors; 

• 

fluctuations in our results of operations;  

•  developments in patent or other proprietary rights, including intellectual property litigation or entering into intellectual property 

license agreements and the costs associated with those arrangements; 

•  announcements  of  technological  innovations  or  new  therapeutic  products  that  may  compete  with  our  approved  products  or 

products under development; 

•  announcements of changes in governmental regulation affecting us or our competitors; 

•  hedging activities by purchasers of our convertible senior notes;  

• 

litigation brought against us or third parties to whom we have indemnification obligations; 

•  public concern as to the safety of drug formulations developed by us or others; and 

•  general market conditions.  

Our stockholders may be diluted, and the price of our common stock may decrease, as a result of the exercise of outstanding 
stock options and warrants or the future issuances of securities. 

We may issue additional common stock, preferred stock, restricted stock units or securities convertible into or exchangeable for 
our  common  stock.  Furthermore,  substantially  all  shares  of  common  stock  for which  our outstanding  stock  options or warrants  are 
exercisable are, once they have been purchased, eligible for immediate sale in the public market. The issuance of additional common 
stock, preferred stock, restricted stock units or securities convertible into or exchangeable for our common stock or the exercise of 
stock options or warrants would dilute existing investors and could adversely affect the price of our securities. 

Item 1B. Unresolved Staff Comments  

None.  

Item 2. Properties 

We currently lease approximately 100,000 square feet of facilities in San Carlos, California under a capital lease which expires in 
2016. The San Carlos facility is home to our administrative headquarters, as well as research and development for our PEGylation and 
advanced  polymer  conjugate  technology  operations.  Until  December  31,  2008,  we  leased  approximately  230,000  additional  square 
feet  in  San  Carlos,  which  housed  our  pulmonary  manufacturing  facility,  as  well  as  research  and  development  laboratories  and 
administrative  offices,  under  a  lease  which  expired  in  2012.  This  lease  was  assigned  to  Novartis  Pharmaceuticals  Corporation  in 
connection with our sale to Novartis of certain of our pulmonary assets on December 31, 2008. 

33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We  currently  own  two  facilities  consisting  of  145,000  square  feet  in  Huntsville,  Alabama,  which  house  laboratories  as  well  as 
administrative,  commercial  and  clinical  manufacturing  facilities  for  our  PEGylation  and  advanced  polymer  conjugate  technology 
operations. Additionally, we lease 18,000 square feet of facilities in Hyderabad, India under various operating leases, with expiration 
dates  ranging  from  2009  to  2011.  The  Hyderabad  facilities  are  used  for  research  and  development  activities.  We  are  currently 
constructing an 80,000 square foot research and development facility near Hyderabad, India. We expect to complete construction of 
this facility by the end of 2009. 

Item 3. Legal Proceedings 

On  June  30,  2006,  we,  our  subsidiary  Nektar  AL,  and  a  former  officer,  Milton  Harris,  entered  into  a  settlement  agreement  and 
general release with the University of Alabama Huntsville (UAH) related to an intellectual property dispute. Under the terms of the 
settlement  agreement,  we,  Nektar  AL,  Mr.  Harris  and  UAH  agreed  to  full  and  complete  satisfaction  of  all  claims  asserted  in  the 
litigation in exchange for $25.0 million in cash payments. We and Mr. Harris made an initial payment of $15.0 million on June 30, 
2006, of which we paid $11.0 million and Mr. Harris paid $4.0 million. During the year ended December 31, 2006, we recorded a 
litigation  settlement  charge  of  $17.7  million,  which  reflects  the  net  present  value  of  the  settlement  payments  using  an  8%  annual 
discount rate. We made payments of $1.0 million in June 2007 and June 2008, respectively. As of December 31, 2008 and 2007, our 
accrued liability related to the UAH settlement was $6.0 million and $6.5 million, respectively. 

In addition, from time to time, we may be subject to other legal proceedings and claims in the ordinary course of business. We are 
not aware of any such proceedings or claims that we believe will have, individually or in the aggregate, a material adverse effect on 
our business, financial condition or results of operations. 

Item 4. Submission of Matters to a Vote of Security Holders 

No matters were submitted to a vote of our security holders in the three-month period ended December 31, 2008. 

Item 5. Market for Registrant’s Common Equity Related Stockholder Matters and Issuer Purchases of Equity Securities 

Our common stock trades on the NASDAQ Global Select Market under the symbol “NKTR.” The table below sets forth the high 

and low closing sales prices for our common stock as reported on the NASDAQ Global Select Market during the periods indicated. 

PART II 

Year Ended December 31, 2007: 
1st Quarter 
2nd Quarter 
3rd Quarter 
4th Quarter 
Year Ended December 31, 2008: 
1st Quarter 
2nd Quarter 
3rd Quarter 
4th Quarter 

Holders of Record 

High

Low

$ 15.24 $ 11.20
9.32
7.63
5.22

13.58
9.75
8.98

$

7.50 $
7.35
5.36
5.97

6.12
3.35
3.10
2.83

As of February 27, 2009, there were approximately 301 holders of record of our common stock. 

Dividend Policy 

We have never declared or paid any cash dividends on our common stock. We currently expect to retain any future earnings for 
use  in  the  operation  and  expansion  of  our  business  and  do  not  anticipate  paying  any  cash  dividends  on  our  common  stock  in  the 
foreseeable future. 

There were no sales of unregistered securities and there were no common stock repurchases made during the year ended December 

31, 2008. 

34 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Securities Authorized for Issuance Under Equity Compensation Plans 

Information  regarding  our  equity  compensation  plans  as  of  December  31,  2008  is  disclosed  in  Item  12  “Security  Ownership  of 
Certain  Beneficial  Owners  and  Management  and  Related  Stockholder  Matters”  of  this  Annual  Report  on  Form  10-K  and  is 
incorporated  herein  by  reference  from  our  proxy  statement  for  our  2009  annual  meeting  of  stockholders  to  be  filed  with  the  SEC 
pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K. 

Performance Measurement Comparison 

The  material  in  this  section  is  being  furnished  and  shall  not  be deemed  “filed”  with  the  SEC  for purposes of  Section 18 of  the 
Exchange Act or otherwise subject to the liability of that section, nor shall the material in this section be deemed to be incorporated by 
reference in any registration statement or other document filed with the SEC under the Securities Act or the Exchange Act, except as 
otherwise expressly stated in such filing. 

The following graph compares, for the five year period ended December 31, 2008, the cumulative total stockholder return (change 
in  stock  price  plus  reinvested  dividends)  of  our  common  stock  with  (i)  the  NASDAQ  Composite  Index,  (ii)  the  NASDAQ 
Pharmaceutical  Index,  (iii)  the  RGD  SmallCap  Pharmaceutical  Index,  (iv)  the  NASDAQ  Biotechnology  Index  and  (v)  the  RDG 
SmallCap Biotechnology Index. Measurement points are the last trading day of each of our fiscal years ended December 31, 2003, 
December 31, 2004, December 31, 2005, December 31, 2006, December 31, 2007 and December 31, 2008. The graph assumes that 
$100  was  invested  on  December  31,  2003  in  the  common  stock  of  the  Company,  the  NASDAQ  Composite  Index,  the  Nasdaq 
Pharmaceutical  Index,  the  RGD  SmallCap  Pharmaceutical  Index,  the  NASDAQ  Biotechnology  Index  and  the  RDG  SmallCap 
Biotechnology Index and assumes reinvestment of any dividends. The stock price performance in the graph is not intended to forecast 
or indicate future stock price performance. 

35 

 
 
 
 
 
 
 
36 

 
 
Item 6. Selected Financial Data 

SELECTED CONSOLIDATED FINANCIAL INFORMATION 
(In thousands, except per share information) 

The  selected  consolidated  financial  data  set  forth  below  should  be  read  together  with  the  consolidated  financial  statements  and 
related notes, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and the other information 
contained herein. 

2008

2007

2006 

2005

2004

Years ended December 31, 

Statements of Operations Data: 
Revenue: 

Product sales and royalties (1) 
Collaboration and other (2) 

Total revenue 
Total operating costs and expenses (3)(4) 
Loss from operations 
Gain (loss) on debt extinguishment 
Interest and other income (expense), net 
Provision (benefit) for income taxes 
Net loss 
Basic and diluted net loss per share (5) 
Shares used in computing basic and diluted net loss per share (5)

$

$

 $ 

153,556 
64,162 
217, 718 
376,948 
(159,230)   

92,272
273,027
309,175
(36,148)
—
4,696
1,309

41,255 $ 180,755 $
48,930
90,185
172,837
(82,652)
50,149
(2,639)
(806)

25,085
89,185
114,270
188,212
(73,942)
(9,258)
(18,849)
(163)
$ (34,336) $ (32,761) $ (154,761)   $  (185,111) $ (101,886)
(1.30)
$
78,461

29,366
96,913
126,279
308,912
(182,633)
(303)
(2,312)
(137)

— 
5,297 
828 

(1.72)   $ 

(2.15) $

(0.36) $

(0.37) $

89,789 

85,915

91,876

92,407

2008

2007

2006 

2005

2004

As of December 31, 

Balance Sheet Data: 
Cash, cash equivalents and investments 
Working capital 
Total assets 
Deferred revenue 
Convertible subordinated notes 
Other long-term liabilities 
Accumulated deficit 
Total stockholders’ equity 
____________ 

378,994
337,846
560,536
65,577
214,955
25,585

$
418,740
$
223,880
$
744,921
$
31,021
$
173,949
36,250
$
$ (1,124,090) $ (1,089,754) $ (1,056,993)   $  (902,232) $ (717,121)
467,342
$

 $  566,423
 $  450,248
 $  858,554
 $ 
23,861
 $  417,653
27,598
 $ 

466,977 
369,457 
768,177 
40,106 
417,653 
29,189 

482,353
425,191
725,103
80,969
315,000
27,543

 $  326,811

227,060 

$
$
$
$
$
$

$
$
$
$
$
$

$
$
$
$
$
$

214,439

190,154

$

$

$

(1)  2006 and 2007 product sales and royalties include commercial manufacturing revenue from Exubera bulk dry powder insulin and

Exubera inhalers. 

(2)  2007, 2006, and 2005 collaboration and other revenue included Exubera commercialization readiness revenue.

(3)  We changed our method of accounting for stock based compensation on January 1, 2006 in connection with the adoption of SFAS

No. 123R, Share-Based Payment. 

(4)  Operating costs and expenses includes the Gain on sale of pulmonary assets of $69.6 million in 2008 and the Gain on termination

of collaborative agreements, net of $79.2 million in 2007.

(5)  Basic and diluted net loss per share is based upon the weighted average number of common shares outstanding.

37 

 
 
 
 
 
  
  
   
 
 
 
 
  
 
  
 
 
  
 
 
  
  
   
 
 
 
 
 
 
 
 
 
 
 
 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations 

The following discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ 
materially from those discussed here. Factors that could cause or contribute to such differences include, but are not limited to, those 
discussed in this section as well as factors described in “Part I, Item 1A—Risk Factors.” 

Overview 

Strategic Direction of Our Business 

We  are  a  clinical-stage  biopharmaceutical  company  developing  a  pipeline  of  drug  candidates  that  utilize  our  PEGylation  and 
advanced polymer conjugate technology platforms to improve the therapeutic benefits of drugs. Our proprietary product pipeline is 
comprised  of  drug  candidates  across  a  number  of  therapeutic  areas,  including  oncology,  pain,  anti-infectives  and  immunology.  We 
create our innovative product candidates by using our proprietary chemistry platform to modify the chemical structure of drugs using 
unique polymer conjugates. Additionally, we may utilize established pharmacologic targets to engineer a new drug candidate relying 
on  a  combination  of  the  known  properties  of  these  targets  and  the  attributes  of  our  customized  polymer  chemistry.  Our  drug 
candidates  are  designed  to  correct  deficiencies  in  the  pharmacokinetics,  half-life,  oral  bioavailability,  metabolism  or  distribution  of 
drugs to improve their therapeutic efficacy. 

During 2009, we expect to continue to make substantial investments to advance our pipeline of drug candidates from early stage 
discovery research through clinical development. On March 2, 2009, we announced that we were terminating our Phase 2 clinical trial 
for Oral NKTR-118 (oral PEGylated naloxol) as a result of positive preliminary results. We also have several Phase 2 clinical trials for 
NKTR-102 (PEGylated irinotecan) directed at a number of different indications in the oncology therapeutic area already underway or 
scheduled  to begin during 2009.  In  addition,  on  February  17,  2009, we announced  that  we  had dosed  the first patient  in  a Phase  1 
clinical trial for NKTR-105 (PEGylated docetaxel) for patients with refractory solid tumors. We also have several other products in 
the  early  discovery  or  preclinical  stage  that  we  are  preparing  to  move  into  clinical  development  or  will  be  moving  into  clinical 
development in 2009. 

Our focus on research and clinical development requires substantial investments that continue to increase as we advance each drug 
candidate through the development cycle. While we believe that our strategy has the potential to create significant value if one or more 
of our drug candidates demonstrates positive clinical results and/or receives regulatory approval in one or more major markets, drug 
development is an inherently uncertain process and there is a high risk of failure at every stage prior to approval and clinical results 
are  very  difficult  to  predict.  Clinical  development  success  and  failures  can  have  an  unpredictable  and  disproportionate  positive  or 
negative impact on our scientific and medical prospects, financial prospects, financial condition, and market value. 

We intend to decide on a product-by-product basis whether we wish to continue development into Phase 3 pivotal clinical trials 
and  commercialize  products on our  own,  or  seek  a  partner,  or  pursue  a  combination  of  these  approaches.  Following  completion  of 
Phase 2 development, or earlier in the development cycle in certain circumstances, we will generally be seeking collaborations with 
one or more biotechnology or pharmaceutical companies to conduct Phase 3 clinical development, to be responsible for the regulatory 
approval process and, if such drug candidate is approved, to market and sell the drug in one or more world markets. The commercial 
terms  of  such  future  collaborations,  if  any, including,  without  limitation,  up-front  payments,  development  milestone  payments, and 
royalty rates, will be critical to the future prospects of our business and financial condition. In particular, our ability to successfully 
conclude a new collaboration for Oral NKTR-118 on commercially favorable terms (or at all), will have a significant impact on our 
financial position and business prospects in 2009. 

We  also  have  a  number  of  existing  license  and  collaboration  agreements  with  third  parties  who  have  licensed  our  proprietary 
technologies  for  drugs  that  have  either  received  regulatory  approval  in  one  or  more  markets  or  drug  candidates  that  are  still  in  the 
clinical  development  stage.  For  example,  the  future  clinical  and  commercial  success  of  Bayer’s  Amikacin  Inhale  (BAY41-6551  or 
NKTR-061), UCB’s CIMZIA™, Roche’s MIRCERA and Affymax’s Hematide, among others, will together have a material impact 
on our long-term revenue prospects, as will the success of Bayer’s Cipro Inhale program, in relation to which we have certain royalty 
rights.  Because  drug  development  and  commercialization  is  subject  to  a  number  of  risks  and  uncertainties,  there  is  a  risk  that  our 
future revenue from one or more of these agreements will be less than we anticipate. 

38 

 
 
 
 
 
 
 
 
 
 
 
We Exited the Inhaled Insulin Drug Programs in 2008 

In  1995,  we  entered  into  a  collaborative  development  and  licensing  agreement  with  Pfizer  to  develop  and  market  dry  powder 
inhaled insulin (Exubera) for patients with diabetes. In 2006 and 2007, we entered into a series of interim letter agreements with Pfizer 
to develop a next generation form of dry powder inhaled insulin (NGI). In January 2006, Exubera received marketing approval in the 
U.S. and EU. Under the collaborative development and licensing agreement, Pfizer had sole responsibility for marketing and selling 
Exubera. We performed all of the manufacturing of the bulk dry powder insulin, and through our third party contract manufacturers 
Bespak Europe Ltd. and Tech Group North America, Inc., we supplied Pfizer with the Exubera inhalers. Our total revenue from Pfizer 
was nil, $189.1 million, and $139.9 million, representing 0%, 69%, and 64% of total revenue, for the years ended December 31, 2008, 
2007, and 2006, respectively. 

On  October  18,  2007,  Pfizer  announced  that  it  was  exiting  the  Exubera  and  inhaled  insulin  development  and  gave  notice  of 
termination  under  our  collaborative  development  and  licensing  agreement.  On  November  9,  2007,  we  entered  into  a  termination 
agreement  and  mutual  release  with  Pfizer. Under  this  agreement  we  received  a one-time  payment  of  $135.0  million from  Pfizer  in 
November 2007 in satisfaction of all outstanding contractual obligations under our then-existing agreements relating to Exubera and 
NGI. All agreements between Pfizer and us related to Exubera and NGI, other than the termination agreement and mutual release and 
a related interim Exubera manufacturing maintenance letter, terminated on November 9, 2007. In February 2008, we entered into a 
manufacturing  termination  agreement  with  Bespak  and  Tech  Group  pursuant  to  which  we  paid  an  aggregate  of  $39.9  million  in 
satisfaction of outstanding accounts payable and termination costs and expenses that were due to the contract manufacturers under the 
Exubera inhaler contract manufacturing agreement. We also entered into a maintenance agreement with both Pfizer and Tech Group to 
preserve key personnel and manufacturing capacity to support potential future Exubera manufacturing if we were successful in finding 
a new partner for the inhaled insulin program. 

On April 9, 2008, we announced that we had ceased all negotiations with potential partners for Exubera and NGI as a result of new 
data analysis from ongoing clinical trials conducted by Pfizer which indicated an increase in the number of new cases of lung cancer 
in Exubera patients who were former smokers as compared to patients in the control group who were not former smokers. In April 
2008,  we  ceased  all  spending  associated  with  maintaining  Exubera  manufacturing  capacity  and  any  further  NGI  development, 
including, but not limited to, terminating the Exubera manufacturing capacity maintenance arrangements with Pfizer and Tech Group. 

We Completed the Sale of Certain Pulmonary Assets and Operations at the End of 2008 

On  December  31,  2008,  we  completed  the  sale  of  certain  assets  related  to  our  pulmonary  business,  associated  technology  and 
intellectual  property  to  Novartis  Pharma  AG  and  Novartis  Pharmaceuticals  Corporation  (together  referred  to  as  Novartis)  for  a 
purchase price of $115.0 million in cash (Novartis Pulmonary Asset Sale). Pursuant to the asset purchase agreement entered between 
Novartis and us, we transferred to Novartis assets and obligations which include certain dry powder and liquid pulmonary formulation 
and manufacturing assets, including capital equipment and manufacturing facility lease obligations, certain intellectual property and 
manufacturing  methods  and  associated  information  systems  related  to  the  pulmonary  business,  and  certain  other  interests  in  two 
private  companies,  and  Novartis  hired  approximately  140  of  our  pulmonary  personnel.  In  addition,  we  assigned  our  rights  and 
obligations, other than certain royalty rights, related to the Cipro Inhale partnered with Bayer Schering Pharma AG to Novartis, and 
terminated our collaborative research, development, and commercialization agreement  related to the Tobramycin inhalation powder 
(TIP)  program  with  Novartis  Vaccines  and  Diagnostics,  Inc.  Pursuant  to  the  asset  purchase  agreement,  we  retain  our  rights  and 
obligations  under  our  co-development,  license  and  co-promotion  agreement  with  Bayer  Healthcare  LLC  related  to  BAY41-6551 
(NKTR-061,  Amikacin  Inhale),  our  development  program  related  to  NKTR-063  (Inhaled  Vancomycin)  and  intellectual  property 
specific  to  inhaled  insulin.  Although  we  completed  the  Novartis  Pulmonary  Asset  Sale  on  December  31,  2008,  we  will  pay 
approximately  $4.4 million in related transaction costs in the three months ended March 31, 2009, including legal fees, investment 
banker fees, and other costs. 

Following the completion of the Novartis transaction, we expect our contract research revenue and total revenue to significantly 
decline in 2009 due to the termination of the inhaled TIP collaboration agreement with Novartis Vaccines and Diagnostics, Inc. and 
our assignment and transfer of our inhaled Cipro Inhale collaboration agreement with Bayer Schering Pharma AG to Novartis. Our 
collaboration revenue related to TIP and Cipro Inhale was $13.7 million and $11.7 million, or 15% and 13%, respectively, of our total 
revenue  for  the  year  ended  December  31,  2008.  We  will  not  receive  any  revenue  from  these  programs  in  2009.  However,  also 
following  the  Novartis  transaction,  we  will  no  longer  incur  expenses  from  the  approximately  140  pulmonary  personnel  and  the 
dedicated pulmonary manufacturing facility, as well as certain other costs related to the assets and obligations, transferred to Novartis. 
The only future research and development obligations associated with the pulmonary assets that we retained in relation to the Novartis 
transaction  relate  to  BAY41-66551  and  NKTR-063.  Under  our  collaboration  agreement  with  Bayer  Healthcare  LLC,  we  are 
responsible for the completion of final device development and have a reimbursement obligation for up to $10.0 million of Phase 3 
development costs incurred by Bayer Healthcare LLC. 

39 

 
 
 
 
 
 
 
 
Key Developments and Trends in Liquidity and Capital Resources 

At December 31, 2008, we had approximately $379.0 million in cash and cash equivalents and $242.6 million in indebtedness. In 
the  three  months  ended  December  31,  2008,  we  repurchased  approximately  $100.0  million  in  par  value  of  our  3.25%  convertible 
subordinated  notes  for  an  aggregate  purchase  price  of  $47.8  million.  We  may  from  time  to  time  purchase  or  retire  additional 
convertible subordinated notes through cash purchase or exchanges for other securities of the Company in open market or privately 
negotiated transactions, depending on, among other factors, our levels of available cash and the price at which such convertible notes 
are available for purchase. We will evaluate such transactions, if any, in light of then-existing market conditions. These transactions, 
individually or in the aggregate, may be material to our business. 

We  have  financed  our  operations  primarily  through  revenue  from  product  sales  and  royalties  and  research  and  development 
contracts and public and private placements of debt and equity. To date we have incurred substantial debt as a result of our issuances 
of  subordinated  notes  that  are  convertible  into  our  common  stock.  Our  substantial  debt,  the  market  price  of  our  securities,  and  the 
general  economic  climate,  among  other  factors,  could  have  material  consequences  for  our  financial  condition  and  could  affect  our 
sources  of  short-term  and  long-term  funding.  Our  ability  to  meet  our  ongoing  operating  expenses  and  repay  our  outstanding 
indebtedness  is  dependent  upon  our  and  our  partners’  ability  to  successfully  complete  clinical  development  of,  obtain  regulatory 
approvals for and successfully commercialize new drugs. Even if we or our partners are successful, we may require additional capital 
to continue to fund our operations and repay our debt obligations as they become due. There can be no assurance that additional funds, 
if and when required, will be available to us on favorable terms, if at all. 

For  the  year  ended  December  31,  2008,  net  cash  used  for  our  operating  activities  was  $145.8  million.  During  the  year  ended 
December  31,  2008,  we  made  the  following  payments,  among  others:  (i)  $39.9  million  to  Bespak  Europe  Ltd.  and  Tech  Group  as 
payment for termination amounts due under our Exubera inhaler manufacturing and supply agreement with those companies, all of 
which was recorded as an expense in 2007, (ii) $6.8 million to maintain Exubera manufacturing capacity through April 2008 and (iii) 
$5.4 million for severance, employee benefits and outplacement services in connection with our workforce reduction plans. We do not 
anticipate incurring any costs in 2009 associated with inhaled insulin. 

Our substantial investment in our preclinical and clinical research and any potential new licensing or partnership agreements, if 
any, will be the key drivers of our results of operations and financial position during 2009. One of our collaboration partners has a 
one-time license extension option exercisable in December 2009. If this partner elects to exercise this license extension option right, 
we will receive a cash payment of $31.0 million in December 2009. 

Results of Operations 

Years Ended December 31, 2008, 2007, and 2006 

Revenue (in thousands except percentages) 

Years ended December 31,

2008 

2007 

2006

Product sales and 
royalties 
Collaboration and other 
Total Revenue 

$  41,255  $  180,755 $ 153,556
64,162
$  90,185  $  273,027 $ 217,718

  92,272

48,930 

Increase/ 
(Decrease)
2008 vs. 2007

Increase/ 
(Decrease) 

Percentage
Increase/ 
(Decrease)

2007 vs. 2006      2008 vs. 2007

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

$ (139,500)
(43,342)
$ (182,842)

$ 27,199
28,110
$ 55,309

(77)%
(47)%
(67)%

18%
44%
25%

During the year ended December 31, 2008, the decrease in total revenue from the year ended December 31, 2007 was primarily 
attributable to the termination of our collaboration agreements with Pfizer related to Exubera and NGI, which accounted for $182.4 
million, or 67%, of our total revenue during the year ended December 31, 2007. We had no revenue from Pfizer related to Exubera or 
NGI  for  the  year  ended  December  31,  2008.  Four  of  our  customers,  Bayer  (including  Bayer  Healthcare  LLC  and  Bayer  Schering 
Pharma AG), UCB Pharma, Novartis, and Roche represented 24%, 16%, 15%, and 14%, respectively, of our total revenue during the 
year ended December 31, 2008. 

In connection with the completion of the Novartis Pulmonary Asset Sale on December 31, 2008, our collaboration agreement with 
Novartis Vaccines and Diagnostics, Inc. for TIP was terminated and our collaboration agreement with Bayer Schering Pharma AG for 

40 

 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
  
 
   
 
 
 
 
 
 
 
 
 
Cipro Inhale was assigned to Novartis. Collaboration revenue related to TIP and Cipro Inhale was $13.7 million and $11.7 million, or 
15% and 13%, of our total revenue for the year ended December 31, 2008. We will not receive any revenue related to these programs 
in 2009. While we may enter new collaboration or license agreements in 2009, we expect revenue to decrease in 2009 as a result of the 
TIP agreement termination, the assignment of the Cipro Inhale agreement, and lower product sales volumes required by our licensing 
partners. In addition, if our collaboration partner elects not to exercise its one-time license extension option in December 2009 and pay 
us the one-time $31.0 million license fee for such option, our revenue would significantly decrease in 2009 as compared to the year 
ended December 31, 2008. 

Product sales and royalties 

For the year ended December 31, 2007, Exubera product sales to Pfizer accounted for $132.9 million of our total revenue. We had 
no revenue from Pfizer related to Exubera for the year ended December 31, 2008. Non-Exubera product sales and royalties decreased 
by approximately $6.6 million, or 14%, for the year ended December 31, 2008, compared to the year ended December 31, 2007. The 
decrease in non-Exubera product sales and royalties is primarily attributable to the November 30, 2007 sale of Aerogen Ireland Ltd., 
one of our former subsidiaries that manufactured and supplied general purpose nebulizer devices, which accounted for $5.5 million in 
revenue for the year ended December 31, 2007. 

Product sales and royalties increased 18% to $180.8 million for the year ended December 31, 2007 as compared to the year ended 
December 31, 2006. Exubera product sales to Pfizer increased by approximately $32.0 million during the year ended December 31, 
2007 as compared to the year ended December 31, 2006. Exubera commercial sales began in January 2006. During the year ended 
December  31,  2006,  we  deferred  recognition  of  all  Exubera  product  sales  until  Pfizer’s  contractual  60-day  right  of  return  period 
lapsed. As a result, as of December 31, 2006, we deferred $22.9 million in Exubera product sales and we recognized ten months of 
product shipments in revenue. In January 2007, we began estimating product warranty returns and recognizing Exubera product sales 
upon  shipment.  During  the  year  ended  December  31,  2007,  we  recognized  product  sales  through  November  9,  2007,  when  our 
collaboration agreements with Pfizer terminated, as well as the revenue deferred at December 31, 2006. 

Royalty  revenues  were  $3.5  million,  $3.7  million,  and  $9.2  million  for  the  years  ended  December  31,  2008,  2007,  and  2006, 

respectively. 

Collaboration and other revenue 

Collaboration  and  other  revenue  includes  reimbursed  research  and  development  expenses,  amortization  of  deferred  up-front 
signing and milestone payments received from our collaboration partners, and intellectual property license fee revenue. Collaboration 
revenue  fluctuates  from  year  to  year,  and  therefore  future  collaboration  revenue  cannot  be  predicted  accurately.  The  level  of 
collaboration and other revenues depends in part upon the continuation of existing collaborations, signing of new collaborations, the 
stage of program development, and the achievement of milestones. 

For  the  year  ended December  31,  2007,  collaboration  and  other revenue  from  Pfizer related  to Exubera  and  NGI  accounted  for 
$49.5 million of our collaboration and other revenue. We had no collaboration and other revenue from Pfizer related to Exubera or 
NGI for the year ended December 31, 2008. The increase in non-Pfizer collaboration and other revenue of $6.1 million during the year 
ended  December  31,  2008  compared  to  the  year  ended  December  31,  2007  is  primarily  attributable  to  a  new  intellectual  property 
license  agreement  we  entered  into  with  F.  Hoffmann-La  Roche  Ltd.  For  the  year  ended  December  31,  2008,  we  have  recognized 
increased collaboration and other revenue from Bayer (including Bayer Healthcare LLC and Bayer Schering Pharma AG) of $12.3 
million  under  our  collaboration  agreements  for  BAY41-6551  (NKTR-061,  Amikacin  Inhale)  and  Cipro  Inhale.  These  increases  are 
offset  by  decreased  collaboration  and  other  revenue  of  $3.3  million  from  Novartis  Vaccines  and  Diagnostics,  Inc.  under  our 
collaboration  agreement  for  TIP  and  of  $3.7  million  from  Solvay  Pharmaceuticals,  Inc.  and  Zelos  Therapeutics  Inc.  following  the 
termination of those collaboration agreements in 2008. 

The increase in collaboration and other revenue for the year ended December 31, 2007 compared to the year ended December 31, 
2006 is primarily attributable to increased revenue from Pfizer of $15.8 million, which includes recognition of $24.6 million in NGI 
up-front fees upon termination of the Pfizer Agreements. Additionally, collaboration and other revenue from Novartis increased by 
$8.5 million under our collaboration agreement for TIP, and Bayer (including Bayer Healthcare LLC and Bayer Schering Pharma AG) 
increased  by  $3.2  million,  and  $1.3  million,  respectively,  under  our  collaboration  agreements  for  Cipro  Inhale  and  BAY41-6551, 
respectively. These increases in collaboration and other revenue were partially offset by decreased revenue from Zelos of $4.2 million 
under our collaboration agreement to develop Ostabolin-C. 

41 

 
 
 
 
 
 
 
 
 
 
 
The timing and future success of our drug development programs and those of our collaboration partners are subject to a number 
of risks and uncertainties. See “Part I, Item 1A—Risk Factors” for discussion of the risks associated with our partnered research and 
development programs. 

Revenue by geography 

Revenue  by  geographic  area  is  based  on  the  shipping  locations  of  our  customers.  The  following  table  sets  forth  revenue  by 

geographic area (in thousands): 

United States 
European countries 
All other countries 
Total Revenue 

    2007

  Years ended December 31,
  2008 
2006
$  30,800   $  212,990 $ 182,959
33,471
  59,385   
1,288
—    
$  90,185   $  273,027 $ 217,718

60,037
—

The  decrease  in  revenue  attributable  to  the  United  States  for  the  year  ended  December  31,  2008  compared  to  the  year  ended 
December 31, 2007 is primarily attributable to our receipt of no revenue from Pfizer related to Exubera for the year ended December 
31, 2008. 

The  increase  in  revenue  attributable  to  the  United  States  for  the  year  ended  December  31,  2007  compared  to  the  year  ended 
December 31, 2006 is primarily attributable to the increase in revenue from Pfizer related to Exubera for the year ended December 31, 
2007. The increase in revenue attributable to European countries for the year ended December 31, 2007 compared to the year ended 
December  31,  2006  is  primarily  due  to  the  increase  in  revenue  from  Novartis  under  our  collaborative  agreement  for  TIP  and  from 
Bayer (including Bayer Healthcare LLC and Bayer Schering Pharma AG) under our collaborative agreements for BAY41-6551 and 
Cipro Inhale. 

Cost of goods sold (in thousands except percentages) 

2008 

Years ended December 31,
2007 
$ 137,696  $

28,216 

2006
113,921

Increase/ 
(Decrease)
2008 vs. 2007
$ (109,480)

Increase/ 
(Decrease) 

Percentage
Increase/ 
(Decrease)

2007 vs. 2006      2008 vs. 2007
(80)%

$ 23,775

13,039   

43,059 

39,635

(30,020)

3,424

(70)%

32%   

24% 

26%

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

21%

9%

Cost of goods sold 

$ 

Product gross margin 
Product gross  
   margin % 

The  decrease  in  cost  of  goods  sold  and  product  gross  margin  during  the  year  ended  December  31,  2008  compared  to  the  year 
ended  December  31,  2007  was  primarily  due  to  the  termination  of  our  agreements  with  Pfizer  related  to  Exubera.  During  the  year 
ended December 31, 2007, Exubera cost of goods sold totaled $103.6 million and Exubera gross margin totaled $29.3 million. The 
increase  in  product  gross  margin  percentage  is  attributable  to  the  change  in  product  mix  with  our  product  sales  based  on  our 
PEGylation and advanced polymer conjugate technologies which have a relatively higher gross margin. 

Cost  of  goods  sold  during  the  year  ended  December  31,  2007  includes  Exubera  manufacturing  costs  through  the  November  9, 
2007  termination  of  the  Pfizer  agreements.  Costs  related  to  our  Exubera  manufacturing  operations  after  November  9,  2007  are 
included in other cost of revenue. 

The increase in cost of goods sold and product gross margin during the year ended December 31, 2007 compared to the year ended 
December  31,  2006  is  consistent  with  the  proportionate  increase  in  Exubera  product  sales,  which  contributed  $19.5  million  to  our 
product  gross  margin  during  the  year  ended  December  31,  2006.  The  decrease  in  gross  margin  percentage  during  the  year  ended 
December 31, 2007 compared to the year ended December 31, 2006 is primarily attributable to product mix, the terms of our cost plus 
manufacturing arrangement with Pfizer, and the decline in royalty revenue of $5.5 million during 2007. 

We expect Cost of goods sold and Product gross margin to decline in 2009 as compared to the year ended December 31, 2008 in 

connection with the lower manufacturing requirements forecasted by our licensing partners.  

42 

 
 
 
 
 
  
  
 
 
 
 
 
  
  
  
  
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cost of Workforce Reduction Plans (in thousands except percentages) 

Years ended December 31,
2007 

2008 

2006

Cost of goods sold, net of 
change in inventory 
Other cost of revenue 
Research and development 
General and administrative 
Cost of workforce 
reduction plans 

  $ 

148    $ 

$

  1,221 
  3,087 
517   

974
  —
  5,791
1,617

  $  4,973    $  8,382

$

Increase/ 
(Decrease)
2008 vs. 2007

Increase/ 
(Decrease) 

Percentage
Increase/ 
(Decrease)

2007 vs. 2006    2008 vs. 2007

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

—
—
—
—

—

$

(826)
1,221
(2,704)
(1,100)

$

974   
— 
5,791   
1,617   

$ (3,409)

$

8,382   

(85%)
n/a
(47%)
(68%)

(41%)

n/a
n/a
n/a
n/a

n/a

We  executed  workforce  reduction  plans  in  May  2007  (2007  Plan)  and  February  2008  (2008  Plan)  designed  to  streamline  the 
company, consolidate corporate functions, and strengthen decision making. The total cost of the 2007 Plan was $8.4 million and the 
total cost of the 2008 Plan was $5.0 million, comprised of cash payments for severance, medical insurance and outplacement services. 
Both plans were substantially complete at December 31, 2008. We have already begun to realize the cost savings related to these two 
plans, as discussed further under “Research and development” and “General and administrative” below. 

Other cost of revenue (in thousands except percentages) 

  Years ended December 31,

2008 

2007 

2006

Increase/ 
(Decrease)
2008 vs. 2007

Increase/ 
(Decrease) 

  Percentage
Increase/ 
(Decrease)

2007 vs. 2006    2008 vs. 2007

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

Other cost of 
revenue 

$ 

6,821 

$ 

9,821 

$

4,168

$

(3,000)

$

(5,653) 

(31%) 

>(100%)

Other cost of revenue includes the idle Exubera manufacturing capacity costs and Exubera commercialization readiness costs that 

were incurred by us prior to the termination of all of our inhaled insulin programs in April 2008. 

Idle  Exubera  manufacturing  capacity  costs  includes  the  costs  of  maintaining  our  manufacturing  operating  capacity  after  the 
termination of the Pfizer agreements on November 9, 2007 through the termination of our inhaled insulin programs on April 9, 2008. 
Idle Exubera manufacturing capacity costs include amounts payable to Pfizer and Tech Group under interim manufacturing capacity 
maintenance  agreements  and  an  allocation  of  manufacturing  costs  shared  between  commercial  operations  and  research  and 
development, including employee compensation and benefits, rent, and utilities. Idle Exubera manufacturing costs were $6.8 million, 
$6.3 million, and nil for the year ended December 31, 2008, 2007, and 2006, respectively. 

Exubera commercialization readiness costs were start-up manufacturing costs we incurred in our Exubera inhalation bulk powder 
manufacturing facility and our Exubera inhaler device third party contract manufacturing locations in preparation for commercial scale 
manufacturing in early 2006. Exubera commercialization readiness costs were nil, $3.5 million, and $4.2 million for the year ended 
December 31, 2008, 2007, and 2006, respectively. 

We do not expect to incur any additional idle Exubera manufacturing capacity or Exubera commercialization readiness costs. 

Research and development (in thousands except percentages) 

Years ended December 31,
2007 

2008 

2006

  Increase/ 
(Decrease)

  Increase/ 

(Decrease)   

  Percentage
  Increase/ 
  (Decrease)

Percentage
  Increase/ 
(Decrease)

2008 vs. 2007 2007 vs. 2006    2008 vs. 2007 2007 vs. 2006

Research & 
development 

$  154,417

$  153,575

$ 149,381

$

842

$

4,194 

1% 

3%

Research  and  development  expenses  consist  primarily  of  personnel  costs,  including  salaries,  benefits  and  stock-based 
compensation,  clinical  studies  performed  by  contract  research  organizations  (CROs),  materials  and  supplies,  licenses  and  fees  and 

43 

 
 
 
  
  
  
  
  
 
  
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
   
   
 
 
 
 
 
 
  
  
  
  
  
 
  
 
   
 
overhead  allocations  consisting  of  various  support  and  facilities  related  costs.  Our  research  and  development  activities  are  broken 
down  between  proprietary  and  partnered  drug  development  programs.  Under  the  terms  of  our  collaboration  agreements,  we  are 
generally  reimbursed  for  research  and  development  activities  and  will  receive  milestones  and  royalties  on  commercial  sales  of  the 
drug. 

Research  and development  costs  include  certain  allocations  of resources shared  across our research  and  development  programs, 
including facilities, manufacturing quality personnel and other shared resources. We have generally allocated these shared costs based 
on personnel hours. The costs incurred in connection with our research and development programs, is as follows (in millions): 

NKTR-102 (PEGylated irinotecan) 
NKTR-118 (oral PEGylated naloxol) 
Tobramycin inhalation powder (TIP) (2) 
BAY41-6551 (NKTR-061, Amikacin Inhale) (3) 
Cipro Inhale (4) 
NKTR-105 (PEGylated docetaxel) 
Inhaled Insulin (5) 
NKTR-063 (Inhaled Vancomycin) 
Other PEGylation product candidates 
Other pulmonary product candidates (6) 
Other (7) 

Research and development 

Clinical 
Study 
Status(1) 
Phase 2 
Phase 2 
Phase 2 
Phase 2 
Phase 2 
Phase 1 
Discontinued 
Phase 1 
Various 
Various 

    Years ended December 31,
  2008 
2006
2007

 $  24.2  $
24.6 
19.7 
17.7 
11.4 
8.4 
3.5 
2.3 
21.0 
15.7 
5.9 

2.7
5.5
12.8
13.6
5.9
—
39.5
—
12.4
54.0
3.0
 $  154.4  $ 153.6 $ 149.4

12.7 $
12.9
16.3
15.2
8.3
0.4
37.6
—
16.2
28.2
5.8

(1)  Clinical Study Status definitions are provided in the chart found in Part I, Item 1. Business 

(2)  The collaboration agreement with Novartis Vaccines and Diagnostics, Inc. was terminated on December 31, 2008 in connection 

with the Novartis Pulmonary Asset Sale. 

(3)  Partnered with Bayer Healthcare LLC since August 2007. As part of the Novartis Pulmonary Asset Sale, we retained an exclusive 

license to this technology for the development and commercialization of this product originally developed by Nektar. 

(4)  The collaboration agreement with Bayer Schering Pharma AG was assigned to Novartis on December 31, 2008 in connection with 

the Novartis Pulmonary Asset Sale. 

(5)  Partnership  for  the  collaboration  and  development  of  Exubera  inhalation  powder  and  the  next  generation  inhaled  insulin  with 

Pfizer was terminated on November 9, 2007. Inhaled insulin programs were terminated in April 2008. 

(6)  Certain proprietary pulmonary intellectual property was transferred to Novartis as part of the Novartis Pulmonary Asset Sale. 

(7)  Other includes additional costs related Novartis Pulmonary Asset Sale in 2008, workforce reduction charges in 2008 and 2007, 

and research and development costs related to our ceased super-critical fluids business in 2006. 

Research and development expense remained at a consistent level in 2008 as compared to 2007 despite a significant increase in our 
investment  in  clinical  development  of  our proprietary  drug  candidates  in  2008.  This was  a  result  of  the  continued  transition of our 
business to focus on our internal proprietary drug candidates in 2008 and a decrease in other research and development activities. 

Salaries, benefits, and stock-based compensation expense decreased by approximately $14.0 million for the year ended December 
31, 2008 compared to the year ended December 31, 2007, as we continued to realize the benefits of our workforce reduction plans 
executed in May 2007 and February 2008. Facilities and equipment expense decreased by approximately $8.0 million primarily as a 
result  of  lower  depreciation  due  to  the  write-off  of  the  Pfizer-related  equipment  in  2007  and  certain  pulmonary  property  and 
equipment classified as held for sale at September 30, 2008. These decreases were offset by increased costs related to our ongoing 
clinical trials for our proprietary drug candidates, comprised increased outside services of $13.4 million, including costs to CROs, and 
increased  materials  and  supplies  expense  of  $8.2  million.  During  the  year  ended  December  31,  2008,  research  and  development 
expense  included  approximately  $2.7  million  in  additional  costs  related  to  the  Novartis  Pulmonary  Asset  Sale,  including  one-time 
termination benefits and other costs. 

44 

 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
During the year ended December 31, 2008, our research and development spending in our partnered drug development programs 
decreased after the termination of our Pfizer agreements for inhaled insulin in November 2007. Spending related to our proprietary 
drug development programs increased as we continued to advance clinical development for NKTR-102, NKTR-118, and NKTR-105. 

Research and development expense, excluding workforce reduction charges, decreased by approximately $1.6 million during the 
year ended December 31, 2007, compared to the year ended December 31, 2006. Research and development expense related to our 
drug  candidates  based  on  PEGylation  technology  and  advanced  polymer  conjugate  technologies  increased  by  approximately  $21.6 
million as a result of the completion of the Phase 1 clinical trials for NKTR-118 and NKTR-102 and the commencement of Phase 2 
clinical  trials  for  these  drug  development  programs.  Pulmonary  research  and  development  program  expenses  decreased  by 
approximately  $20.2  million  as  a  result  of  a  $20.0  million  decrease  related  to  NKTR-024  and  a  $12.9  million  decrease  related  to 
Exubera.  These  decreases  are  partially  offset  by  increased  spending  on  NGI  of  $11.0  million,  increased  spending  on  TIP  of  $3.5 
million  and  increased  spending  on  BAY41-6551  of  approximately  $1.6  million.  Additionally,  we  decreased  spending  on  non-
pulmonary and non-PEGylation programs by $3.0 million in connection with the winding down of our Bradford, UK operations in 
2006 which related to our super-critical fluid technology. 

We anticipate that our research and development expenses will decrease in the year ended December 31, 2009 compared to the 
year ended December 31, 2008, which will be comprised of decreases in our internal salaries, benefits, and facilities costs as a result 
of the Novartis Pulmonary Asset Sale, partially offset by an increase in materials and supplies and third party costs for our CROs as 
we continue to advance clinical trials for NKTR-102, NKTR-118, and NKTR-105. 

The estimated completion dates for our programs are not reasonably certain. See Item 1a. Risk Factors for discussion of the risks 

associated with drug candidates in development and the risks and uncertainties associated with clinical development at any stage. 

General and administrative (in thousands except percentages) 

Years ended December 31,
2007 

2006

2008 

Increase/ 
(Decrease)
2008 vs. 2007

Increase/ 
(Decrease) 

  Percentage
Increase/ 
  (Decrease)

2007 vs. 2006    2008 vs. 2007

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

General & 
administrative 

$  51,497  $  57,282

$

82,358

$

(5,785)

$

(25,076) 

(10%) 

(30%)

General and administrative expenses are associated with administrative staffing, business development, marketing, and legal. 

The  decrease  in  general  and  administrative  expenses  during  the  year  ended  December  31,  2008  compared  to  the  year  ended 
December 31, 2007 is primarily attributable to decreased professional fees of $5.1 million and decreased salaries and benefits of $8.8 
million, partially  offset by  increased  marketing  costs  of $1.7  million  related  to our  co-promotion  agreement  with  Bayer  Healthcare 
LLC for BAY41-6551, decreased corporate overhead costs allocated out of general and administrative departments to manufacturing 
and research and development of $4.0 million, and other net increases of $2.4 million. 

The  decrease  in  general  and  administrative  expenses  during  the  year  ended  December  31,  2007  compared  to  the  year  ended 
December  31,  2006  is  primarily  attributable  to  decreased  non-cash  stock-based  compensation  expense  of  $11.9  million,  decreased 
intangible  asset  amortization  of  $3.1  million,  decreased  headcount  resulting  in  decreased  salaries  and  benefits  of  $2.3  million, 
decreased professional fees of $5.9 million, and a $1.8 million decrease in connection with the winding down of our Bradford, UK 
operations in 2006. 

Impairment of long lived assets (in thousands except percentages) 

Years ended December 31,
2007 

2008 

2006

Increase/ 
(Decrease)
2008 vs. 2007

Increase/ 
(Decrease) 

  Percentage
Increase/ 
(Decrease)

2007 vs. 2006      2008 vs. 2007

Percentage
Increase/ 
(Decrease)
2007 vs. 2006

Impairment of long lived 
assets 

$ 

1,458  $  28,396

$

9,410

$

(26,938)

$

18,986 

(95%) 

>100%

45 

 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
  
 
   
 
During the year ended December 31, 2008, impairment of long lived assets includes an impairment charge of $1.5 million related 
to a specialized dryer designed for our PEGylation manufacturing facility. The dryer was not functioning properly and was not being 
used in operations. We determined the carrying value of the manufacturing equipment exceeded the fair value based on a discounted 
cash flow model. 

During the year ended December 31, 2007, impairment of long lived assets includes an impairment charge of $28.4 million for 

Exubera-related assets following the termination of our collaborative agreements with Pfizer. 

During  the  year  ended  December  31,  2006,  impairment  of  long  lived  assets  includes  a  write-off  of  $5.5  million  of  certain 
intangible  assets  relating  to  the  operations  of  our  former  Ireland  subsidiary,  $1.2  million  relating  to  the  remaining  laboratory  and 
office  equipment  at  our  Bradford,  UK  site,  and  $2.8  million  relating  to  an  asset  being  constructed  for  use  in  one  of  our  partnered 
pulmonary drug development programs. 

Gain on sale of pulmonary assets (in thousands except percentages) 

Years ended December 31,
2007

2008 

2006

  Increase/ 
(Decrease)

  Increase/ 

(Decrease)   

  Percentage
  Increase/ 
  (Decrease)

Percentage
  Increase/ 
(Decrease)

2008 vs. 2007 2007 vs. 2006    2008 vs. 2007 2007 vs. 2006

Gain on sale of pulmonary 
assets 

$  (69,572) 

$  —

$ —

$ 69,572

$ — 

n/a 

n/a

On December 31, 2008, we sold certain of our pulmonary assets to Novartis for $115.0 million. The gain on sale of pulmonary 
assets  includes  the  purchase  price  received  from  Novartis  less  the  net  book  value  of  property  and  equipment  of  $37.3  million,  an 
equity investment in Pearl Therapeutics, Inc. of $2.7 million, transaction costs of $4.6 million, and other costs of $0.9 million. 

Gain on termination of collaborative agreements, net (in thousands except percentages) 

Years ended December 31,
2006

2007

2008 

  Increase/ 
(Decrease)

  Increase/ 

(Decrease)   

  Percentage
  Increase/ 
  (Decrease)

Percentage
  Increase/ 
(Decrease)

2008 vs. 2007 2007 vs. 2006    2008 vs. 2007 2007 vs. 2006

Gain on termination of 
collaborative agreements, 
net 

$  — 

$  (79,178)

$ — $ (79,178)

$ 79,178 

n/a 

n/a

On November 9, 2007, we terminated our collaborative development and license agreement with Pfizer and all other agreements 
between us and Pfizer related to Exubera and NGI. Pursuant to the termination agreement, we received a one-time payment of $135.0 
million from Pfizer in full satisfaction and release of all contract obligations. The gain on termination of collaborative agreements, net, 
includes the Pfizer termination payment received of $135.0 million less our contractual aggregate liability to Bespak and Tech Group 
of $32.4 million and less settlement of outstanding receivables and payables with Pfizer of $23.5 million. 

Litigation settlement 

Litigation settlement 

Years ended December 31,
2007 
$  1,583

2008 
$  — 

2006
$ 17,710

  Increase/ 
(Decrease)

  Increase/ 

(Decrease)   

  Percentage
  Increase/ 
  (Decrease)

Percentage
  Increase/ 
(Decrease)

2008 vs. 2007 2007 vs. 2006    2008 vs. 2007 2007 vs. 2006

$ (1,583)

$ (16,127) 

n/a 

(91)%

During the year ended December 31, 2007, we recorded a litigation settlement charge of $1.6 million related to three employee-

related litigation settlements that were entered into in 2007. 

On June 30, 2006, we entered into a litigation settlement related to an intellectual property dispute with the University of Alabama, 
Huntsville pursuant to which we paid $11.0 million and agreed to pay an additional $10.0 million in equal $1.0 million installments 
over  ten  years  beginning on July  1, 2007. During  the  year  ended December  31, 2006  we  recorded a  litigation  settlement  charge  of 
$17.7 million which reflects the net present value of the settlement payments using an 8% annual discount rate. 

46 

 
 
 
 
 
 
  
  
  
  
  
 
  
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
 
  
  
  
  
  
 
  
 
   
 
 
Interest income (in thousands except percentages) 

2008 
$  12,495 

Years ended December 31,
2007 
$  22,201 

$

Increase/ 
(Decrease)
2008 vs. 2007

$

(9,706)

Increase/ 
(Decrease)

  Percentage
Increase/ 
  (Decrease)

2007 vs. 2006    2008 vs. 2007

$

(1,445)

(44%) 

Percentage
Increase/ 
(Decrease)
2007 vs. 2006
(6%)

2006
23,646

Interest 
  income 

The  decrease  in  interest  income  for  the  year  ended  December  31,  2008,  compared  to  the  year  ended  December  31,  2007,  was 

primarily due to lower interest rates on our cash, cash equivalents, and available-for-sale investments in 2008 compared to 2007. 

The  decrease  in  interest  income  during  the  year  ended  December  31,  2007  compared  to  the  year  ended  December  31,  2006  is 
primarily due to a decline in the average balance of cash, cash equivalents, and investments in marketable securities due to repayment 
of $102.7 million in convertible subordinated notes. 

Interest expense (in thousands except percentages) 

2008 
$  15,192 

Years ended December 31,
2007 
$  18,638 

$

Increase/ 
(Decrease)
2008 vs. 2007

$

(3,446)

Increase/ 
(Decrease)

  Percentage
Increase/ 
  (Decrease)

2007 vs. 2006    2008 vs. 2007

$

(2,155) 

(18%) 

Percentage
Increase/ 
(Decrease)
2007 vs. 2006
(10%)

2006
20,793

Interest 
  expense 

The  decrease  in  interest  expense  for  the  year  ended  December  31,  2008,  compared  to  the  year  ended  December  31,  2007,  was 
primarily  attributable  to  a  lower  average  balance  of  convertible  subordinated  notes  outstanding  in  2008.  We  repurchased  $100.0 
million of our 3.25% convertible subordinated notes during the fourth quarter of 2008. We expect interest expense to decrease in 2009 
as a result of this convertible subordinated note repurchase. 

The decrease in interest expense during the year ended December 31, 2007 compared to the year ended December 31, 2006 was 
primarily due to a lower average balance of convertible subordinated notes outstanding during 2007. We repaid $36.0 million of our 
5%  convertible  subordinated  notes  in  February  2007  and  we  repaid  $66.6  million  of  our  3.5%  convertible  subordinated  notes  in 
October 2007. 

Other income, net (in thousands except percentages) 

Other income (expense), net 

$ 

58 

$ 

1,133

$

2,444

Years ended December 31,
2007 

2008 

2006

Increase/ 
(Decrease)
2008 vs. 2007

$

(1,075)

Increase/ 
(Decrease) 

  Percentage
Increase/ 
  (Decrease)

2007 vs. 2006    2008 vs. 2007

$

(1,311) 

(95%) 

Percentage
Increase/ 
(Decrease)
2007 vs. 2006
(54%)

During the year ended December 31, 2007, we recognized a $0.9 million gain from the sale of the management buy-out of our 
nebulizer  device  business  operated  in  our  wholly-owned  Ireland  subsidiary,  which  was  completed  on  November  30,  2007  in 
consideration of a payment to us of $2.2 million and a net gain of $0.9 million. 

During the year ended December 31, 2006, we recognized a $2.2 million gain from the sale of an equity investment in Confluent 

Technologies. We do not expect to realize income from such transactions in the future. 

Gain on debt extinguishment (in thousands except percentages) 

Gain on debt 

Years ended December 31,
2007 
$  — 

2008 
$  50,149 

2006
$ —

  Increase/ 
(Decrease)

  Increase/ 

(Decrease)   

  Percentage
  Increase/ 
  (Decrease)

Percentage
  Increase/ 
(Decrease)

2008 vs. 2007 2007 vs. 2006    2008 vs. 2007 2007 vs. 2006

$ 50,149

$ — 

n/a 

n/a

47 

 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
  
 
   
   
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
  
 
   
   
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
  
 
   
 
 
 
 
  
  
  
 
  
 
   
extinguishment 

During  the  three  months  ended  December  31,  2008,  we  repurchased  approximately  $100.0  million  in  par  value  of  our  3.25% 
convertible subordinated notes for an aggregate purchase price of $47.8 million. The recognized gain on debt extinguishment is net of 
transaction costs of $1.0 million and accelerated amortization of our deferred financing costs of $1.1 million. 

Liquidity and Capital Resources 

We  have  financed  our  operations  primarily  through  revenue  from  product  sales  and  royalties  and  research  and  development 
contracts, public and private placements of debt and equity. We do not utilize off-balance sheet financing arrangements as a source of 
liquidity or financing. Additionally, at December 31, 2008, we had letter of credit arrangements with certain financial institutions and 
vendors, including our landlord, totaling $2.9 million. These letters of credit expire during 2009 and are secured by investments in 
similar amounts. 

As  of  December  31,  2008,  we  had  cash,  cash  equivalents  and  investments  in  marketable  securities  of  $379.0  million  and 
indebtedness of $242.6 million, including $215.0 million of convertible subordinated notes, $21.6 million in capital lease obligations 
and $6.0 million in other liabilities. 

Due to the recent adverse developments in the credit markets, we may experience reduced liquidity with respect to some of our 
short-term investments. These investments are generally held to maturity, which is less than one year. However, if the need arose to 
liquidate such securities before maturity, we may experience losses on liquidation. As of December 31, 2008, we held $233.6 million 
of available-for-sale investments, excluding money market funds, with an average time to maturity of 72 days. To date we have not 
experienced any liquidity issues with respect to these securities, but should such issues arise, we may be required to hold some, or all, 
of  these  securities  until  maturity.  We  believe  that,  even  allowing  for  potential  liquidity  issues  with  respect  to  these  securities,  our 
remaining cash and cash equivalents and short-term investments will be sufficient to meet our anticipated cash needs for at least the 
next twelve months. We have the ability and intent to hold our debt securities to maturity when they will be redeemed at full par value. 
Accordingly, we consider unrealized losses to be temporary and have not recorded a provision for impairment. 

Cash flows used in operating activities 

During the year ended December 31, 2008, net cash used for our operating activities was $145.8 million. The decrease in net cash 
provided  by  our  operating  activities  for  the  year  ended  December  31,  2008  as  compared  to  the  year  ended  December  31,  2007, 
resulted from the $135.0 million cash payment received from Pfizer in 2007 under the Exubera termination agreement and up-front 
payments of $50.0 million and $24.6 million received in 2007 from Bayer Healthcare LLC and Pfizer, respectively. In addition, the 
net cash used for our operating activities for the year ended December 31, 2008 included a number of significant items including a 
$10.0  million  clinical  development  milestone received from  Bayer  Healthcare  LLC  under our  collaboration  agreement  for  BAY41-
6551 (NKTR-061, Amikacin Inhale), payments by us to Bespak Europe Ltd. and Tech Group, Inc. of $39.9 million for amounts due 
under termination agreements with these Exubera inhaler device contract manufacturers, all of which was recorded as an expense in 
2007, $6.8 million paid to maintain Exubera manufacturing capacity through April 2008, and $5.4 million for severance, employee 
benefits, and outplacement services in connection with our workforce reduction plans. We expect our cash flows used in operations to 
decrease in 2009. 

During the year ended December 31, 2007, net cash provided by operating activities was $146.3 million. During the year ended 
December 31, 2007, net cash provided by operating activities increased by $239.0 million compared to the year ended December 31, 
2006, in which we used $92.7 million in operating activities. The increase in cash provided by operations in the year ended December 
31, 2007 included a number of significant items including a contract termination payment received from Pfizer of $135.0 million and 
up-front payments of $50.0 million and $24.6 million received from Bayer Healthcare LLC and Pfizer, respectively. 

Cash flows from investing activities 

On December 31, 2008, we completed the sale of certain pulmonary assets to Novartis for a purchase price of $115.0 million. We 
paid $0.2 million in transaction costs related to the sale during the year ended December 31, 2008 and expect to pay approximately 
$4.4  million  in  transaction  costs  in  the  three  months  ending  March  31,  2009,  all  of  which  we  expensed  in  the  three  months  ended 
December 31, 2008. 

48 

 
 
 
 
 
 
 
 
 
 
 
 
 
We purchased $18.9 million, $32.8 million, and $22.5 million of property and equipment in the year ended December 31, 2008, 
2007,  and  2006,  respectively.  We  expect  our  capital  additions  to  remain  at  a  consistent  level  during  the  year  ended  December  31, 
2009, as we complete our research and development facility in Hyderabad, India. 

In  July  2008,  we  invested  $4.2  million  in  Pearl  Therapeutics  Inc.  (Pearl).  In  2007,  we  granted  Pearl  a  limited  field  intellectual 
property license to certain of our proprietary pulmonary delivery technology. Upon the closing of the Novartis asset sale transaction 
on  December  31,  2008,  we  transferred  our  ownership  interest  in  Pearl  to  Novartis  and  assigned  the  intellectual  property  license  to 
Novartis. 

Cash flows used in financing activities 

During the year ended December 31, 2008, we repurchased approximately $100.0 million in par value of our 3.25% convertible 
subordinated  notes  for  an  aggregate  purchase  price  of  $47.8  million.  The  $215.0  million  of  3.25%  convertible  subordinated  notes 
outstanding at December 31, 2008, are due in September 2012. 

During the year ended December 31, 2007, we repaid $102.7 million of convertible subordinated notes. 

Contractual Obligations 

Obligations (1) 
Convertible subordinated notes, including interest 
Capital leases, including interest 
Purchase commitments (2) 
Litigation settlement, including interest 

____________ 

Payments due by period
  2-3 yrs 
  2010-2011   

4-5 yrs
  2012-2013

<=1 yr
2009

2014+

Total

$ 241,153 $
38,822
17,042
8,000

—
14,424
—
3,000
$ 305,017 $ 29,745   $  25,631   $ 232,217 $ 17,424

6,986   $  13,972   $ 220,195 $
9,659   
4,717   
—   
17,042   
2,000    
1,000    

10,022
—
2,000

(1)  The  above  table  does not  include  certain  commitments and contingencies which are discussed  in  Note  8  of Item 8. Financial

Statements and Supplementary Data. 

(2)  Substantially all of this amount was subject to open purchase orders as of December 31, 2008 that were issued under existing

contracts. This amount does not represent minimum contract termination liability.

Given our current cash requirements, we forecast that we will have sufficient cash to meet our net operating expense requirements 
and  contractual  obligations  at  least  through  December  31,  2010.  We  plan  to  continue  to  invest  in  our  growth  and  our  future  cash 
requirements will depend upon the timing and results of these investments. Our capital needs will depend on many factors, including 
continued  progress  in  our  research  and  development  programs,  progress  with  preclinical  and  clinical  trials  of  our  proprietary  and 
partnered drug candidates, our ability to successfully enter into additional collaboration agreements for one or more of our proprietary 
drug  candidates  or  intellectual  property  that  we  control,  the  time  and  costs  involved  in obtaining regulatory  approvals,  the  costs of 
developing  and  scaling  our  clinical  and  commercial  manufacturing  operations,  the  costs  involved  in  preparing,  filing,  prosecuting, 
maintaining  and  enforcing  patent  claims,  the  need  to  acquire  licenses  to  new  technologies  and  the  status  of  competitive  products. 
Included in our purchase commitments above is approximately $2.7 million of capital purchase commitments. 

To date we have incurred substantial debt as a result of our issuances of subordinated notes that are convertible into our common 
stock.  Our  substantial  debt,  the  market  price  of  our  securities,  and  the  general  economic  climate,  among  other  factors,  could  have 
material  consequences  for  our  financial  condition  and  could  affect  our  sources  of  short-term  and  long-term  funding.  Our  ability  to 
meet  our  ongoing  operating  expenses  and  repay  our  outstanding  indebtedness  is  dependent  upon  our  and  our  partners’  ability  to 
successfully complete clinical development of, obtain regulatory approvals for and successfully commercialize new drugs. Even if we 
or our partners are successful, we may require additional capital to continue to fund our operations and repay our debt obligations as 
they become due. There can be no assurance that additional funds, if and when required, will be available to us on favorable terms, if 
at all. 

49 

 
 
 
 
 
 
 
 
  
  
  
  
 
 
   
   
 
 
 
 
 
 
 
Off Balance Sheet Arrangements 

We do not utilize off-balance sheet financing arrangements as a source of liquidity or financing. 

Critical Accounting Policies 

The  preparation  of  financial  statements  in  conformity  with  U.S.  Generally  Accepted  Accounting  Principles  (GAAP)  requires 
management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent 
assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting 
period. 

We  base  our  estimates  on  historical  experience  and  on  various  other  assumptions  that  we  believe  to  be  reasonable  under  the 
circumstances, the results of which form our basis for making judgments about the carrying value of assets and liabilities that are not 
readily apparent from other sources, and evaluate our estimates on an ongoing basis. Actual results may differ from those estimates 
under different assumptions or conditions. We have determined that for the periods reported in this report, the following accounting 
policies and estimates are critical in understanding our financial condition and results of our operations. 

Revenue Recognition 

Collaboration and other research revenue includes amortization of up-front fees. Up-front fees should be recognized ratably over 
the  expected  benefit  period  under  the  arrangement.  Given  the  uncertainties  of  research  and  development  collaborations,  significant 
judgment  is  required  to  determine  the  duration of  the  arrangement. We have $57.2  million  of  deferred  up-front  fees  related  to five 
research  and  collaboration  agreements  that  are  being  amortized  over  an  average  of  12  years.  We  considered  shorter  and  longer 
amortization periods. The shortest reasonable period is the end of the development period (estimated to be 4 to 6 years). Given the 
statistical probability of drug development success in the bio-pharmaceutical industry, drug development programs have only a 5%-
10% probability of reaching commercial success. The longest period is either the contractual life of the agreement, which is generally 
10-12  years  from  the  first  commercial  sale,  or  the  end  of  the  patent  life,  which  is  frequently  15-17  years.  If  we  had  determined  a 
longer or shorter amortization period was appropriate, our annual up-front fee amortization could be as low as $4.0 million or as high 
as $14.0 million. 

Milestone  payments  that  we  receive  under  our  collaboration  agreements  are  deferred  and  recorded  as  revenue  ratably  over  the 
period of  time  between  the  achievement  of  the  milestone  and  the  estimated  date of  completion  of  the  next development  milestone. 
Management makes its best estimate of the period of time until the next milestone is reached. This estimate affects the recognition of 
revenue for completion of the previous milestone. The original estimate is periodically evaluated to determine if circumstances have 
caused the estimate to change and if so, amortization of revenue is adjusted prospectively. 

Stock-Based Compensation 

We use the Black-Scholes option valuation model adjusted for the estimated historical forfeiture rate for the respective grant to 
determine  the  estimated  fair  value  of  our  stock-based  compensation  arrangements  on  the  date  of  grant  (grant  date  fair  value)  and 
expense this value ratably over the service period of the option or performance period of the Restricted Stock Unit award (RSU). The 
Black-Scholes option  pricing  model  requires the  input  of  highly  subjective  assumptions.  Because  our  employee  stock  options have 
characteristics  significantly  different  from  those  of  traded  options,  and  because  changes  in  the  subjective  input  assumptions  can 
materially affect the fair value estimate, in management’s opinion, the existing models may not provide a reliable single measure of 
the  fair  value  of  our  employee  stock  options  or  common  stock  purchased  under  our  employee  stock  purchase  plan.  In  addition, 
management  continually  assesses  these  assumptions  and  methodologies  used  to  calculate  the  estimated  fair  value  of  stock-based 
compensation. Circumstances may change and additional data may become available over time, which could result in changes to the 
assumptions and methodologies, and which could materially impact our fair value determination. 

Further, we have issued performance-based RSU awards totaling approximately 1,010,000 shares of our common stock to certain 
employees. These awards vest based upon achieving three pre-determined performance milestones. We are expensing the grant date 
fair value of the awards ratably over the expected performance period for the RSU awards in which the performance milestones are 
probable of achievement under a Statement of Financial Accounting Standards No. 5, Accounting for Contingencies, definition. The 
total grant date fair value of the RSU awards was $19.8 million, including $4.0 million for the first milestone, $7.9 million for the 
second milestone, and $7.9 million for the third milestone. 

50 

 
 
 
 
 
 
 
 
 
 
 
 
 
The first performance milestone was achieved and approximately 174,035 shares were fully vested and released during the year 
ended December 31, 2007. The second performance milestone related to the achievement of $30.0 million of Exubera royalty revenue 
from  Pfizer  in  one  calendar  quarter.  During  the  year  ended  December  31,  2007,  we  determined  that  it  is  not  probable  that  future 
Exubera  product  sales  will  be  sufficient  to  meet  the  second  performance  milestone  and  we  reversed  $2.8  million  of  previously 
recognized expense. The third performance milestone relates to the first filing (whether by us or a third party licensee or partner of 
ours) and acceptance of a New Drug Application (NDA) or Biologics License Application (BLA) by the FDA or an equivalent filing 
and  acceptance  with  the  European  Medicines  Agency  for  a  proprietary  drug  candidate.  Based  on  our  current  product  pipeline 
development efforts, we currently estimate that the third performance milestone is currently probable of achievement by the end of the 
third quarter of 2011. 

Evaluating and estimating the probability of achieving the remaining performance milestone and the appropriate timing related to 
the  achievement  is  highly  subjective  and  requires  periodic  reassessment  of  rapidly  changing  facts  and  circumstances.  Actual 
achievement  of  these  performance  milestones  or  changes  in  facts  and  circumstances  may  cause  significant  fluctuations  in  expense 
recognition between reporting periods and would result in changes in the timing and amount of expense recognition related to these 
RSU awards. 

Clinical Trial Accruals 

We  record  accruals  for  the  estimated  costs  of  our  clinical  trials.  Most  of  our  clinical  trials  are  performed  by  third-party  CROs, 
which  are  a  significant  component  of  our  Research  and  development  expense.  We  accrue  costs  associated  with  the  start-up  and 
reporting phases of the clinical trials ratably over the estimated duration of the start-up and reporting phases. If the actual timing of 
these phases varies from the estimate, we will adjust the accrual prospectively. We accrue costs associated with treatment phase of 
clinical trials based on the total estimated cost of the clinical trials and are expensed ratably based on patient enrollment in the trials. 

Income Taxes 

We  account  for  income  taxes  under  the  liability  method  in  accordance  with  FASB  Statement  No.  109,  Accounting  for  Income 
Taxes, and FASB Interpretation No. 48 (FIN 48), Accounting for Uncertainty in Income Taxes—An Interpretation of FASB Statement 
No. 109. Under this method, deferred tax assets and liabilities are determined based on differences between financial reporting and tax 
reporting bases of assets and liabilities and are measured using enacted tax rates and laws that are expected to be in effect when the 
differences  are  expected  to reverse.  Realization of  deferred  tax  assets  is  dependent upon future  earnings,  the  timing  and  amount  of 
which are uncertain. FIN 48 contains a two-step approach to recognizing and measuring uncertain tax positions. The first step is to 
evaluate the tax position by determining if the weight of available evidence indicates that it is more likely than not that the position 
will be sustained upon tax authority examination, including resolution of related appeals or litigation processes, if any. The second 
step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. 

Adoption  of  FIN  48,  which  occurred  on  January  1,  2007,  had  no  impact  on  our  consolidated  financial  position,  results  of 
operations, cash flows or our effective tax rate. However, revisions to the estimated net realizable value of the deferred tax asset in the 
future could cause our provision for income taxes to vary significantly from period to period. 

At December 31, 2008, we had significant federal and state net operating loss and research credit carry forwards which were offset 
by a full valuation allowance, due to our inability to estimate long-term future taxable income with a more likely than not certainty. 
Upon  adoption  of  FIN  48,  we  did  not  recognize  an  increase  or  a  decrease  in  the  liability  for  net  unrecognized  tax  benefits,  which 
would be accounted for through retained earnings. We historically accrued for uncertain tax positions in deferred tax assets as we have 
been in a net operating loss position since inception and any adjustments to our tax positions would result in an adjustment of our net 
operating loss or tax credit carry forwards rather than resulting in a cash outlay. If we are eventually able to recognize these uncertain 
positions,  our  effective  tax  rate  would  be  reduced.  We  currently  have  a  full  valuation  allowance  against  our  net  deferred  tax  asset 
which would impact the timing of the effective tax rate benefit should any of these uncertain tax positions be favorably settled in the 
future. 

On a periodic basis, we will continue to evaluate the realizability of our deferred tax assets and liabilities and adjust such amounts 
in light of changing facts and circumstances, including but not limited to the level of past and future taxable income, the utilization of 
the carry forwards, tax legislation, rulings by relevant tax authorities, tax planning strategies and if applicable, the progress of ongoing 
tax audits. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the period 
in which those temporary differences become deductible or the net operating loss and research credit carry forwards can be utilized. 

51 

 
 
 
 
 
 
 
 
 
 
 
Recent Accounting Pronouncements 

FASB Statement of Position No. 157-2  

In February 2008, the FASB issued FASB Staff Position 157-2, Effective Date of FASB Statement No. 157 (FSP 157-2), which 
delays  the  effective  date  of  SFAS  No.  157  to  fiscal  years  beginning  after  November  15,  2008,  for  all  nonfinancial  assets  and 
nonfinancial liabilities, except for items that are recognized or disclosed at fair value in the financial statements on a recurring basis (at 
least annually). In accordance with FSP 157-2, the fair value measurements for non-financial assets and liabilities is required to be 
adopted effective for fiscal years beginning after November 15, 2008 We believe the adoption of the delayed items of SFAS No. 157 
will not have a material impact on our financial statements. 

EITF 07-1 

In  December  2007,  the  FASB  ratified  EITF  Issue  No.  07-1,  Accounting  for  Collaborative  Arrangements,  which  defines 
collaborative  arrangements  and  establishes  reporting  and  disclosure  requirements  for  transactions  between  participants  in  a 
collaborative arrangement and between participants in the arrangements and third parties. This issue is effective retrospectively to all 
prior periods presented for all collaborative arrangements existing as of the effective date for fiscal years beginning after December 
15, 2008. We believe the adoption of EITF 07-1 will not have a material impact on our financial statements. 

FSP APB 14-1 

In May 2008, the FASB issued FSP Accounting Principles Board (APB) 14-1 “Accounting for Convertible Debt Instruments That 
May Be Settled in Cash upon Conversion (Including Partial Cash Settlement)” (FSP APB 14-1). FSP APB 14-1 addresses instruments 
commonly  referred  to  as  Instrument  C  from  EITF  90-19,  which  requires  the  issuer  to  settle  the  principal  amount  in  cash  and  the 
conversion spread in cash or net shares at the issuer’s option. FSP APB 14-1 requires the issuer of these instruments account for the 
liability (debt) and equity (conversion option) components of the instrument in a manner that reflects the issuer’s nonconvertible debt 
borrowing rate. FSP APB 14-1 is effective for fiscal years beginning after December 15, 2008 and interim periods within those fiscal 
years  on  a  retroactive  basis.  Early  application  is  not  permitted.  The  noteholders  may  only  convert  outstanding  convertible 
subordinated  notes  to  shares  of  our  common  stock,  therefore  we  do  not  expect  FSP  APB  14-1  to  have  a  material  impact  on  our 
financial position or results of operations. 

Item 7A. Quantitative and Qualitative Disclosures About Market Risk  

Interest Rate and Market Risk 

The  primary  objective  of  our  investment  activities  is  to  preserve  principal  while  at  the  same  time  maximizing  yields  without 
significantly  increasing  risk.  To  achieve  this  objective,  we  invest  in  liquid,  high  quality  debt  securities.  Our  investments  in  debt 
securities are subject to interest rate risk. To minimize the exposure due to an adverse shift in interest rates, we invest in short-term 
securities and maintain a weighted average maturity of one year or less. 

A hypothetical 50 basis point increase in interest rates would result in an approximate $0.4 million decrease, less than 1%, in the 
fair value of our available-for-sale securities at December 31, 2008. This potential change is based on sensitivity analyses performed 
on our investment securities at December 31, 2008. Actual results may differ materially. The same hypothetical 50 basis point increase 
in interest rates would have resulted in an approximate $0.7 million decrease, less than 1%, in the fair value of our available-for-sale 
securities at December 31, 2007. 

Due to the adverse developments in the credit markets in 2008, we may experience reduced liquidity with respect to some of our 
short-term investments. These investments are generally held to maturity, which is less than one year. However, if the need arose to 
liquidate such securities before maturity, we may experience losses on liquidation. As of December 31, 2008, we held $233.6 million 
of available-for-sale investments, excluding money market funds, with an average time to maturity of 72 days. To date we have not 
experienced any liquidity issues with respect to these securities, but should such issues arise, we may be required to hold some, or all, 
of  these  securities  until  maturity.  We  believe  that,  even  allowing  for  potential  liquidity  issues  with  respect  to  these  securities,  our 
remaining cash and cash equivalents and short-term investments will be sufficient to meet our anticipated cash needs for at least the 
next twelve months. We have the ability and intent to hold our debt securities to maturity when they will be redeemed at full par value. 
Accordingly, we consider unrealized losses to be temporary and have not recorded a provision for impairment. 

52 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Foreign Currency Risk 

The majority of our revenue, expense, and capital purchasing activities are transacted in U.S. dollars. However, since a portion of 
our operations  consists of  research  and  development  activities  outside  the United  States, we have  entered  into  transactions  in other 
currencies, primarily the Indian Rupee, and we therefore are subject to foreign exchange risk. 

Our  international  operations  are  subject  to  risks  typical  of  international  operations,  including,  but  not  limited  to,  differing 
economic conditions, changes in political climate, differing tax structures, other regulations and restrictions, and foreign exchange rate 
volatility. We do not utilize derivative financial instruments to manage our exchange rate risks. 

53 

 
 
 
 
Item 8. Financial Statements and Supplementary Data 

NEKTAR THERAPEUTICS 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Reports of Independent Registered Public Accounting Firm
Consolidated Balance Sheets at December 31, 2008 and 2007
Consolidated Statements of Operations for each of the three years in the period ended December 31, 2008 
Consolidated Statements of Stockholders’ Equity for each of the three years in the period ended December 31, 2008
Consolidated Statements of Cash Flows for each of the three years in the period ended December 31, 2008 
Notes to Consolidated Financial Statements 

Page
55
57
58
59
60
61

54 

 
 
 
 
 
  
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders, Nektar Therapeutics 

We have audited the accompanying consolidated balance sheets of Nektar Therapeutics as of December 31, 2008 and 2007, and 
the related consolidated statements of operations, stockholders’ equity and cash flows for each of the three years in the period ended 
December  31,  2008.  Our  audits  also  included  the  financial  statement  schedule  listed  in  the  Index  at  Item  15(a)(2).  These  financial 
statements  and  schedule  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an  opinion  on  these 
financial statements and schedule based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). 
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are 
free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the 
financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, 
as  well  as  evaluating  the  overall  financial  statement  presentation.  We  believe  that  our  audits  provide  a  reasonable  basis  for  our 
opinion. 

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position 
of Nektar Therapeutics at December 31, 2008 and 2007, and the consolidated results of its operations and its cash flows for each of the 
three years in the period ended December 31, 2008, in conformity with U.S. generally accepted accounting principles. Also, in our 
opinion,  the  related  financial  statement  schedule,  when  considered  in  relation  to  the  basic  financial  statements  taken  as  a  whole, 
presents fairly in all material respects the information set forth therein. 

As  discussed  in  Note  1  to  the  consolidated  financial  statements,  Nektar  Therapeutics  changed  its  method  of  accounting  for 

uncertain tax positions as of January 1, 2007. 

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United  States), 
Nektar’s internal control over financial reporting as of December 31, 2008, based on criteria established in Internal Control-Integrated 
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 4, 2009 
expressed an unqualified opinion thereon. 

/s/ ERNST & YOUNG LLP 

San Jose, California 
March 4, 2009 

55 

 
 
 
 
 
 
 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders, Nektar Therapeutics 

We  have  audited  Nektar  Therapeutic’s  internal  control  over  financial  reporting  as  of  December  31,  2008,  based  on  criteria 
established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway 
Commission  (the  COSO  criteria).  Nektar  Therapeutic’s  management  is  responsible  for  maintaining  effective  internal  control  over 
financial  reporting,  and  for  its  assessment  of  the  effectiveness  of  internal  control  over  financial  reporting  included  in  the 
accompanying Management Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the 
company’s internal control over financial reporting based on our audit. 

We  conducted  our  audit  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United  States). 
Those  standards  require  that  we  plan  and perform  the  audit  to  obtain  reasonable  assurance  about  whether  effective  internal  control 
over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over 
financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of 
internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. 
We believe that our audit provides a reasonable basis for our opinion. 

A  company’s  internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance  regarding  the 
reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) 
pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the 
assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being 
made  only  in  accordance  with  authorizations  of  management  and  directors  of  the  company;  and  (3)  provide  reasonable  assurance 
regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use  or  disposition  of  the  company’s  assets  that  could  have  a 
material effect on the financial statements. 

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of 
changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. 

In our opinion,  Nektar Therapeutics  maintained,  in  all  material  respects,  effective  internal  control  over  financial  reporting  as of 

December 31, 2008, based on the COSO criteria. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
consolidated  balance  sheets  of  Nektar  Therapeutics  as  of  December  31,  2008  and  2007,  and  the  related  consolidated  statements  of 
operations,  stockholders’  equity  and  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2008  of  Nektar 
Therapeutics and our report dated March 4, 2009 expressed an unqualified opinion thereon. 

/s/ ERNST & YOUNG LLP 

San Jose, California 
March 4, 2009 

56 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

CONSOLIDATED BALANCE SHEETS 
(In thousands, except per share information) 

Current assets: 

ASSETS

Cash and cash equivalents 
Short-term investments 
Accounts receivable, net of allowance of $92 and $33 at December 31, 2008 and 2007,

$ 

155,584 $
223,410

76,293
406,060

December 31,

2008 

2007

respectively 

Inventory 
Other current assets 

Total current assets 
Property and equipment, net 
Goodwill 
Other assets 
Total assets 

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities: 

Accounts payable 
Accrued compensation 
Accrued clinical trial expenses 
Accrued expenses to contract manufacturers 
Accrued expenses 
Deferred revenue, current portion 
Other current liabilities 

Total current liabilities 
Convertible subordinated notes 
Capital lease obligations 
Deferred revenue 
Deferred gain 
Other long-term liabilities 
Total liabilities 

Commitments and contingencies 
Stockholders’ equity: 

Preferred stock, 10,000 shares authorized Series A, $0.0001 par value: 3,100 shares designated; no 

shares issued or outstanding at December 31, 2008 and 2007

Common stock, $0.0001 par value; 300,000 authorized; 92,503 shares and 92,301 shares issued

and outstanding at December 31, 2008 and 2007, respectively

Capital in excess of par value 
Accumulated other comprehensive income 
Accumulated deficit 

Total stockholders’ equity 

Total liabilities and stockholders’ equity 

11,161
9,319
6,746
406,220 $
73,578
76,501
4,237
560,536 $

13,832 $
11,570
17,622
—
9,923
10,010
5,417
68,374 $

214,955
20,347
55,567
5,901
5,238
370,382 $

$ 

$ 

$ 

$ 

$ 

21,637
12,187
7,106
523,283
114,420
78,431
8,969
725,103

3,589
14,680
2,895
40,444
9,551
19,620
7,313
98,092
315,000
21,632
61,349
8,680
5,911
510,664

—

—

9
1,312,796
1,439
(1,124,090)
190,154
560,536 $

9
1,302,541
1,643
(1,089,754)
214,439
725,103

$ 

The accompanying notes are an integral part of these consolidated financial statements. 

57 

 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except per share information) 

Years ended December 31,
2007

2006

2008 

Revenue: 

Product sales and royalties 
Collaboration and other 

Total revenue 
Operating costs and expenses: 

Cost of goods sold 
Other cost of revenue 
Research and development 
General and administrative 
Impairment of long lived assets 
Gain on sale of pulmonary assets 
Gain on termination of collaborative agreements, net
Litigation settlement 

Total operating costs and expenses 

Loss from operations 

Non-Operating income (expense): 

Interest income 
Interest expense 
Other income (expense), net 
Gain on extinguishment of debt 

Total non-operating income 
Loss before provision (benefit) for income taxes 
Provision (benefit) for income taxes 
Net loss 
Basic and diluted net loss per share 
Shares used in computing basic and diluted net loss per share

$

$

41,255  $  180,755
48,930 
92,272
90,185  $  273,027

$

$

153,556
64,162
217,718

28,216 
6,821 
154,417 
51,497 
1,458 
(69,572)   

  137,696
9,821
  153,575
57,282
28,396
—
(79,178)
1,583
$ 172,837  $  309,175
(36,148)

(82,652)   

— 
— 

113,921
4,168
149,381
82,358
9,410
—
—
17,710
376,948
(159,230)

$

12,495 
(15,192)   

58 
50,149 
47,510 

22,201
(18,638)
1,133
—
4,696

23,646
(20,793)
2,444
—
5,297
$ (35,142)  $  (31,452) $ (153,933)
828
$ (34,336)  $  (32,761) $ (154,761)
(1.72)
$
89,789

(0.37)  $ 

(0.36) $

92,407 

(806)   

91,876

1,309

The accompanying notes are an integral part of these consolidated financial statements. 

58 

 
 
 
 
  
  
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
(in thousands) 

Balance at December 31, 2005 
Stock option exercises 
Stock-based compensation 
SFAS No. 123R transition adjustment 
Conversion of Preferred Stock 
Warrant exercises 
Shares issued for employee plans(1) 
Stock-based compensation to consultants 
Other comprehensive income 
Net loss 
Comprehensive loss 
Balance at December 31, 2006 
Stock option exercises and RSU release 
Stock-based compensation 
Shares issued for employee plans(1) 
Other comprehensive income 
Net loss 
Comprehensive loss 
Balance at December 31, 2007 
Stock option exercises and RSU release 
Stock-based compensation 
Shares issued for employee plans(1) 
Other comprehensive loss 
Net loss 
Comprehensive loss 
Balance at December 31, 2008 

Preferred Shares 

Common Shares 

Shares 
20 
— 
— 
— 
(20) 
— 
— 
— 
— 
— 

  Amount 
Paid In 
— 
— 
— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 

Shares

87,707
2,326
—

1,023
12
212
—
—
—

91,280
761
—
260
—
—

92,301
146
—
56
—
—

Par Value
9
$
—
—
—
—
—
—
—
—
—

$

$

9
—
—
—
—
—

9
—
—
—
—
—

9

Capital In 
Excess of
Par Value
$

1,233,690
20,642
29,143
(2,949)
—
—
3,425
31
—
—

$

$

1,283,982
2,915
13,193
2,451
—
—

1,302,541
122
9,871
262
—
—

$

Deferred
Compensation
(2,949)
—
—
2,949
—
—
—
—
—
—

$

$

—
—
—
—
—
—

—
—
—
—
—
—

—

$ 

Accumulated 
Other 
Comprehensive 
Income/(Loss) 
(1,707) 
— 
— 
— 
— 
— 
— 
— 
1,769 
— 

$ 

$ 

62 
— 
— 
— 
1,581 
— 

1,643 
— 
— 
— 
(204) 
— 

  Accumulated

Deficit

Total 
Stockholders’
Equity

$

$

$

  $ 

  $ 

  $ 

(902,232)
—
—
—
—
—
—
—
—
(154,761)

(1,056,993)
—
—
—
—
(32,761)

(1,089,754)
—
—
—
—
(34,336)

326,811
20,642
29,143
—
—
—
3,425
31
1,769
(154,761)
(152,992)
227,060
2,915
13,193
2,451
1,581
(32,761)
(31,180)
214,439
122
9,871
262
(204)
(34,336)
(34,540)
190,154

— 

92,503

$

$

1,312,796

$

$ 

1,439 

  $ 

(1,124,090)

$

(1)  Employee plans include Employee Stock Purchase Plan (ESPP) and 401K Plan

The accompanying notes are an integral part of these consolidated financial statements

59 

 
 
 
  
  
 
 
 
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Cash flows provided by (used in) operating activities:
Net loss 

Adjustments to reconcile net loss to net cash provided by (used in) operating activities:

Gain on sale of pulmonary assets 
Gain on extinguishment of debt
Depreciation and amortization 
Stock-based compensation 
Impairment of long lived assets 
Other non-cash transactions 
Changes in assets and liabilities: 

Decrease (increase) in trade accounts receivable
Decrease (increase) in inventories 
Decrease (increase) in other assets 
Increase (decrease) in accounts payable 
Increase (decrease) in accrued compensation 
Increase (decrease) in accrued clinical trial expenses
Increase (decrease) in accrued expenses to contract manufacturers
Increase (decrease) in accrued expenses 
Increase (decrease) in deferred revenue 
Increase (decrease) in other liabilities 

Net cash provided by (used in) operating activities 
Cash flows from investing activities: 

Proceeds from sale of pulmonary assets, net of transaction costs
Investment in Pearl Therapeutics 
Purchases of property and equipment 
Maturities of investments 
Sales of investments 
Purchases of investments 

Net cash provided by (used in) investing activities 
Cash flows from financing activities: 

Issuance of common stock, net of issuance costs
Payments of loan and capital lease obligations 
Repayments of convertible subordinated notes 
Net cash provided by (used in) financing activities 
Effect of exchange rates on cash and cash equivalents
Net increase (decrease) in cash and cash equivalents 
Cash and cash equivalents at beginning of year 
Cash and cash equivalents at end of year 
Supplemental disclosure of cash flows information:
Cash paid for interest 
Cash paid for income taxes 
Supplemental schedule of non-cash investing and financing activities:
Property acquired through capital leases 

Years ended December 31,
2007

2008 

2006

$

(34,336)   $ 

(32,761) $ (154,761)

(69,572)   
(50,149)   
22,489 
9,871 
1,458 
1,251 

—
—
29,028
14,779
28,396
109

10,476 
2,868 
1,166 
6,181 
(3,382)   
14,727 
(40,444)   
(1,332)   
(15,392)   
(1,662)    

24,318
1,503
7,443
(3,147)
986
907
40,444
(5,200)
40,863
(1,366)
$ (145,782)   $  146,302

$

—
—
33,509
30,982
9,410
(3,003)

(34,654)
3,971
1,095
(8,926)
3,581
1,322
—
4,181
16,245
4,333
(92,715)

114,831 

(4,236)   
(18,855)   
588,168 
70,060 
(475,316)    
 $ 
274,652 

—
—
(32,796)
591,202
2,057
(593,118)

—
—
(22,524)
405,622
2,252
(502,230)
(32,655) $ (116,880)

384 
(2,368)   
(47,757)    
(49,741)   $  (101,768) $

3,780
(2,895)
(102,653)

162 
79,291 
76,293 
155,584 

14,706 
812 

 $ 

 $ 

 $ 
 $ 

654
12,533
63,760
76,293

17,389
801

— 

 $ 

4,445

22,259
(10,488)
—
11,771
311
$ (197,513)
261,273
63,760

$

$
$

$

17,751
—

—

$

$

$

$

$
$

$

The accompanying notes are an integral part of these consolidated financial statements. 

60 

 
 
  
  
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

December 31, 2008 

Note 1—Organization and Summary of Significant Accounting Policies  

Organization and Basis of Presentation 

We are a clinical-stage biopharmaceutical company headquartered in San Carlos, California and incorporated in Delaware. We are 
developing a pipeline of drug candidates that utilize our PEGylation and advanced polymer conjugate technology platforms designed 
to improve the therapeutic benefits of drugs. 

Principles of Consolidation and Use of Estimates 

Our consolidated financial statements include the financial position and results of operations and cash flows of our wholly-owned 
subsidiaries: Nektar Therapeutics AL, Corporation, Nektar Therapeutics (India) Private Limited, Nektar Therapeutics UK, Ltd., and 
Aerogen Inc. All intercompany accounts and transactions have been eliminated in consolidation. 

Our  consolidated  financial  statements  are  denominated  in  U.S.  dollars.  Accordingly,  changes  in  exchange  rates  between  the 
applicable foreign currency and the U.S. dollar will affect the translation of each foreign subsidiary’s financial results into U.S. dollars 
for  purposes  of  reporting  our  consolidated  financial  results.  Translation  gains  and  losses  are  included  in  accumulated  other 
comprehensive loss in the stockholders’ equity section of the balance sheet. To date, such cumulative translation adjustments have not 
been  material  to  our  consolidated  financial  position.  Transaction  gains  and  losses  arising  from  activities  in  other  than  applicable 
functional  currency  are  calculated  using  the  average  exchange  rate  for  the  applicable  period  and  reported  in  net  income  as  a  non-
operating item in each period. Aggregate gross foreign currency transaction gains (losses) recorded in net income for the years ended 
December 31, 2008, 2007, and 2006 were not material. 

The  preparation  of  financial  statements  in  conformity  with  U.S.  generally  accepted  accounting  principles  (GAAP)  requires 
management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent 
assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting 
period. Actual results could differ from those estimates. On an ongoing basis, we evaluate our estimates, including those related to 
inventories and related impairment of investments and long lived assets, restructuring and contingencies, stock based compensation, 
and  litigation.  We  base  our  estimates  on  historical  experience  and  on  other  assumptions  that  management  believes  are  reasonable 
under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities when 
these values are not readily apparent from other sources. 

Reclassifications 

Certain items previously reported in specific financial statement captions have been reclassified to conform to the current period 

presentation. Such reclassifications have not impacted previously reported revenues, operating loss or net loss. 

Cash, Cash Equivalents, and Investments and Fair Value of Financial Instruments 

We  consider  all  investments  in  marketable  securities  with  an  original  maturity  of  three  months  or  less  to  be  cash  equivalents. 
Investments  are  designated  as  available-for-sale  and  are  carried  at  fair  value,  with  unrealized  gains  and  losses  reported  in 
stockholders’ equity as accumulated other comprehensive income (loss). The disclosed fair value related to our investments is based 
primarily  on  the  reported  fair  values  in  our  period-end  brokerage  statements.  We  independently  validate  these  fair  values  using 
available market quotes and other information. Investments with maturities greater than one year from the balance sheet date, if any, 
are classified as long-term. 

Interest and dividends on securities classified as available-for-sale, as well as amortization of premiums and accretion of discounts 
to maturity, are included in interest income. Realized gains and losses and declines in value of available-for-sale securities judged to 
be  other-than-temporary,  if  any,  are  included  in  other  income  (expense).  The  cost  of  securities  sold  is  based  on  the  specific 
identification method. 

61 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The carrying value of cash, cash equivalents, and investments approximates fair value and is based on quoted market prices. On 
January  1,  2008,  we  adopted  the  provisions  of  Statement  of  Financial  Accounting  Standards  No.  157,  Fair  Value  Measurements 
(SFAS No. 157), for financial assets and financial liabilities. SFAS No. 157 defines fair value, establishes a framework for measuring 
fair  value  in  GAAP,  and  expands  disclosures  about  fair  value  measurements.  SFAS  No.  157  does  not  require  any  new  fair  value 
measurements, but provides guidance on how to measure fair value by providing a fair value hierarchy used to classify the source of 
the information. The standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered 
observable and the last unobservable, that may be used to measure fair value which are the following: 

Level 1—Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access. 

Level  2—Inputs  other  than  Level  1  that  are  observable,  either  directly  or  indirectly,  such  as  quoted  prices  for  similar  assets  or 
liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market 
data for substantially the full term of the assets or liabilities. 

Level  3—Unobservable  inputs  that  are  supported  by  little  or  no  market  activity  and  that  are  significant  to  the  fair  value  of  the 

assets or liabilities. 

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair 

value measurement. 

In accordance with FASB Statement of Position No. 157-2, we have deferred adoption of SFAS No. 157 for non-financial assets 

and non-financial liabilities, including goodwill and property and equipment, until January 1, 2009. 

Accounts Receivable and Significant Customer Concentrations 

Our customers are primarily pharmaceutical and biotechnology companies that are located in the U.S. and Europe. Our accounts 
receivable  balance  contains  billed  and  unbilled  trade  receivables  from  product  sales  and  royalties  and  collaborative  research 
agreements.  We  provide  for  an  allowance  for  doubtful  accounts  by  reserving  for  specifically  identified  doubtful  accounts.  We 
generally  do  not  require  collateral  from  our  customers.  We  perform  a  regular  review  of  our  customers’  payment  histories  and 
associated credit risk. We have not experienced significant credit losses from our accounts receivable. At December 31, 2008, three 
different customers represented 29%, 19%, and 15%, respectively, of our accounts receivable. At December 31, 2007, three different 
customers represented 28%, 24%, and 22%, respectively, of our accounts receivable. 

Inventories and Significant Supplier Concentrations 

Inventories  are  computed  on  a  first-in,  first-out  basis  and  stated  net  of  reserves  at  the  lower  of  cost  or  market.  Inventory  costs 
include direct materials, direct labor, and manufacturing overhead. Supplies inventory related to research and development activities 
are expensed when purchased. 

We are dependent on our partners and vendors to provide raw materials, drugs and devices of appropriate quality and reliability 
and to meet applicable regulatory requirements. Consequently, in the event that supplies are delayed or interrupted for any reason, our 
ability to develop and produce our products could be impaired, which could have a material adverse effect on our business, financial 
condition and results of operation. 

Property and Equipment 

Property and equipment are stated at cost. Major improvements are capitalized, while maintenance and repairs are expensed when 
incurred.  Manufacturing,  laboratory  and  other  equipment  are  depreciated  using  the  straight-line  method  generally  over  estimated 
useful  lives of  three  to  seven  years.  Leasehold  improvements  and  buildings  are depreciated  using  the  straight-line method over the 
shorter of the estimated useful life or the remaining term of the lease. 

In accordance with SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, we periodically review our 
property and equipment for recoverability whenever events or changes in circumstances indicate that the carrying value may not be 
recoverable. Generally, an impairment loss would be recognized if the carrying amount of an asset exceeds the sum of the discounted 
cash  flows  expected  to  result  from  the  use  and  eventual  disposal  of  the  asset.  Please  refer  to  Note  13  of  Notes  to  Consolidated 
Financial Statements for additional information on the impairment analysis performed. 

62 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Goodwill 

Goodwill represents the excess of the price paid for another entity over the fair value of the assets acquired and liabilities assumed 
in  a  business  combination.  We  account  for  our  goodwill  asset  in  accordance  with  SFAS  No.  142,  Goodwill  and  Other  Intangible 
Assets (SFAS No. 142), and test for impairment in the fourth quarter of each year using an October 1 measurement date, as well as at 
other times when impairment indicators exists or when events occur or circumstances change that would indicate the carrying amount 
may not be fully recoverable. 

For purposes of our annual impairment test, we have identified and assigned goodwill to two reporting units (as defined in SFAS 
No.  142):  (1)  pulmonary  technology  and  (2)  PEGylation  and  advanced  polymer  conjugate  technology.  Goodwill  is  tested  for 
impairment at the reporting unit level using a two-step approach. The first step is to compare the fair value of a reporting unit’s net 
assets, including assigned goodwill, to the book value of its net assets, including assigned goodwill. If the fair value of the reporting 
unit  is  greater than  its  net  book value,  the  assigned  goodwill  is  not  considered  impaired.  If  the  fair value  is  less  than  the reporting 
unit’s  net  book  value,  we  perform  a  second  step  to  measure  the  amount  of  the  impairment,  if  any.  The  second  step  would  be  to 
compare  the  book  value  of  the  reporting  unit’s  assigned  goodwill  to  the  implied  fair  value  of  the  reporting  unit’s  goodwill.  As  of 
December 31, 2008 and 2007, the carrying value of our goodwill was $76.5 million and $78.4 million, respectively. Approximately 
$1.9 million of goodwill allocated to our pulmonary reporting unit was included in the sale of certain pulmonary assets to Novartis. 
There were no indications of impairment at December 31, 2008 or December 31, 2007. 

Revenue Recognition 

We  recognize  revenue  in  accordance  with  Securities  and  Exchange  Commission  Staff  Accounting  Bulletin  No.  104,  Revenue 
Recognition  in  Financial  Statements  (SAB  104)  and  Emerging  Issues  Task  Force,  Issue  No.  00-21  (EITF  00-21),  Revenue 
Arrangements with Multiple Deliverables. 

Revenue is recognized when there is persuasive evidence that an arrangement exists, delivery has occurred, the price is fixed and 

determinable, and collection is reasonably assured. Allowances are established for estimated sales returns and uncollectible amounts. 

Product Sales and Royalty Revenue 

Product  sales  are  primarily  derived  from  cost-plus  manufacturing  and  supply  agreements  with  our  collaboration  partners,  and 
revenue is recognized in accordance with the terms of the related collaboration agreement. We have not experienced any significant 
returns from our customers. 

Generally, we are entitled to royalties from our partners based on their net sales once their products are approved for commercial 
sale. We recognize royalty revenue when the cash is received or when the royalty amount to be received is estimable and collection is 
reasonably assured. 

Collaboration and other revenue 

Collaborative research and development arrangements 

We  enter  into  collaborative  research  and  development  arrangements  with  pharmaceutical  and  biotechnology  partners  that  may 
involve multiple deliverables. Our arrangements may contain the following elements: upfront fees, collaborative research, milestone 
payments, manufacturing and supply, royalties and license fees. The principles and guidance outlined in EITF No. 00-21 provide a 
framework to (a) determine whether an arrangement involving multiple deliverables contains more than one unit of accounting, and 
(b)  determine  how  the  arrangement  consideration  should  be  measured  and  allocated  to  the  separate  units  of  accounting  in  the 
arrangement.  Significant  judgment  is  required  when  determining  the  separate  units  of  accounting  and  the  fair  value  of  individual 
deliverables.  For  each  separate  unit  of  accounting  we  have  objective  and  reliable  evidence  of  fair  value  using  available  internal 
evidence for the undelivered item(s) and our arrangements generally do not contain a general right of return relative to the delivered 
item. We use the residual method to allocate the arrangement consideration when it does not have fair value of a delivered item(s). 
Under the residual method, the amount of consideration allocated to the delivered item equals the total arrangement consideration less 
the aggregate fair value of the undelivered items. 

63 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Contract  research  revenue  from  collaborative  research  and  development  agreements  is  recorded  when  earned  based  on  the 
performance requirements of the contract. Advance payments for research and development revenue received in excess of amounts 
earned are classified as deferred revenue until earned. Amounts received under these arrangements are generally non-refundable even 
if the research effort is unsuccessful. 

Payments  received  for  milestones  achieved  are  deferred  and  recorded  as  revenue  ratably  over  the  period  of  time  from  the 
achievement of milestone for which we received payment and our estimate of the date on which the next milestone will be achieved. 
Management makes its best estimate of the period of time until the next milestone is reached. This estimate affects the recognition of 
revenue for completion of the previous milestone. The original estimate is periodically evaluated to determine if circumstances have 
caused the estimate to change and if so, amortization of revenue is adjusted prospectively. Final milestone payments are recorded and 
recognized upon achieving the respective milestone, provided that collection is reasonably assured. 

License Fee Revenue 

We have granted licenses for certain of our intellectual property assets for use in developing new molecules. We recognize revenue 
when delivery has occurred and we have no further performance obligations. We consider delivery to have occurred when the license 
is granted on an exclusive basis and the license is for the duration of the intellectual property life. 

Exubera Commercialization Readiness Revenue 

Exubera  commercialization  readiness  revenue  represents  reimbursements  from  Pfizer,  of  certain  agreed  upon  operating  costs 
relating to our Exubera inhalation powder manufacturing facilities and our device contract manufacturing locations in preparation for 
commercial production, plus a markup on such costs. Exubera commercialization readiness costs are start up manufacturing costs we 
have  incurred  in  our  Exubera  Inhalation  Powder  manufacturing  facility  and  our  Exubera  Inhaler  device  contract  manufacturing 
locations in preparation for commercial production. 

Shipping and Handling Costs 

We record costs related to shipping and handling of product to customers in cost of goods sold. 

Stock-Based Compensation 

Stock-based compensation arrangements covered by SFAS No. 123R, Share-Based Payment (SFAS No. 123R) currently include 
stock option grants and restricted stock unit (RSU) awards under our equity incentive plans and purchases of common stock by our 
employees at a discount to the market price under our Employee Stock Purchase Plan (ESPP). Under SFAS No. 123R, the value of the 
portion of the option or award that is ultimately expected to vest is recognized as expense on a straight line basis over the requisite 
service periods in our Consolidated Statements of Operations. Stock-based compensation expense for purchases under the ESPP are 
recognized  based  on  the  estimated  fair  value  of  the  common  stock  during  each  offering period  and  the  percentage  of  the  purchase 
discount. 

We use the Black-Scholes option valuation model adjusted for the estimated historical forfeiture rate for the respective grant to 
determine  the  estimated  fair  value  of  our  stock-based  compensation  arrangements  on  the  date  of  grant  (grant  date  fair  value)  and 
expense  this  value  ratably  over  the  service  period  of  the  option  or  performance  period  of  the  RSU  award.  Expense  amounts  are 
allocated among inventory, cost of goods sold, research and development expenses, and general and administrative expenses based on 
the function of the applicable employee. The Black-Scholes option pricing model requires the input of highly subjective assumptions. 
Because our employee stock options have characteristics significantly different from those of traded options, and because changes in 
the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models may not 
provide  a  reliable  single  measure  of  the  fair  value  of  our  employee  stock  options  or  common  stock  purchased  under  the  ESPP.  In 
addition, management will continue to assess the assumptions and methodologies used to calculate estimated fair value of stock-based 
compensation. Circumstances may change and additional data may become available over time, which could result in changes to these 
assumptions and methodologies, and which could materially impact our fair value determination. 

64 

 
 
 
 
 
 
 
 
 
 
 
 
 
Research and Development Expense 

Research and development costs are expensed as incurred and include salaries, benefits and other operating costs such as outside 
services,  supplies  and  allocated  overhead  costs.  We  perform  research  and  development  for  our  proprietary  drug  candidates  and 
technology  development  and  for  certain  third  parties  under  collaboration  agreements.  For  our  proprietary  drug  candidates  and  our 
internal technology development programs, we invest our own funds without reimbursement from a third party. Costs associated with 
treatment phase of clinical trials are accrued based on the total estimated cost of the clinical trials and are expensed ratably based on 
patient enrollment in the trials. Costs associated with the start-up and reporting phases of the clinical trials are expensed ratably over 
the duration of the reporting and start-up phases. 

Our collaboration agreements typically include a license to our intellectual property, technology and clinical development support, 
and in certain cases, the manufacture and supply of our proprietary drug components. Under these collaboration agreements, we may 
receive  up-front  license  fees,  development  cost  reimbursement,  clinical  development  and  regulatory  milestone  payments,  fees  for 
manufacturing our proprietary drug components, and royalties on sales if the drug candidate receives regulatory approval. Many of our 
collaboration agreements are cancelable by the partner without significant financial penalty. 

On January 1, 2008, we adopted EITF No. 07-3, Accounting for Nonrefundable Advance Payments for Goods or Services for Use 
in  Future  Research  and  Development  Activities,  which  provides  guidance  on  the  accounting  for  certain  nonrefundable  advance 
payments for goods or services that will be used or rendered for future research and development activities. The adoption did not have 
a material impact on our financial position or results of operations. 

Net Loss Per Share 

Basic  net  loss  per  share  is  calculated  based  on  the  weighted-average  number  of  common  shares  outstanding  during  the  periods 
presented. For all periods presented in the Consolidated Statements of Operations, the net loss available to common stockholders is 
equal to the reported net loss. Basic and diluted net loss per share are the same due to our historical net losses and the requirement to 
exclude potentially dilutive securities which would have an anti-dilutive effect on net loss per share. The weighted average of these 
potentially dilutive securities has been excluded from the diluted net loss per share calculation and is as follows (in thousands): 

Convertible subordinated notes 
Stock options 
Warrants 
Total 

Income Taxes 

Years ended December 31,
2007
15,781
11,108
  —
 26,889

2008 
13,804 
14,147 
  — 
27,951 

2006
16,896
8,901
13
25,810

We account for income taxes under the liability method in accordance with SFAS No. 109, Accounting for Income Taxes (SFAS 
No.  109),  and  FASB  Interpretation  No.  48  (FIN  48),  Accounting  for  Uncertainty  in  Income  Taxes—An  Interpretation  of  FASB 
Statement  No.  109.  Under  this  method,  deferred  tax  assets  and  liabilities  are  determined  based  on  differences  between  financial 
reporting and tax reporting bases of assets and liabilities and are measured using enacted tax rates and laws that are expected to be in 
effect when the differences are expected to reverse. Realization of deferred tax assets is dependent upon future earnings, the timing 
and amount of which are uncertain. 

FIN  48  contains  a  two-step  approach  to  recognizing  and  measuring  uncertain  tax  positions.  The  first  step  is  to  evaluate  the  tax 
position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will 
be sustained upon tax authority examination, including resolution of related appeals or litigation processes, if any. The second step is 
to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. 

We  adopted  FIN  48  on  January  1,  2007.  Upon  adoption,  we  did  not  recognize  an  increase  or  a  decrease  in  the  liability  for  net 

unrecognized tax benefits, which would be accounted for through retained earnings. 

65 

 
 
 
 
 
 
 
 
  
  
   
 
 
 
 
 
 
 
 
 
We have incurred net operating losses since inception and we do not have any significant unrecognized tax benefits. Our policy is 
to  include  interest  and  penalties  related  to  unrecognized  tax  benefits,  if  any,  within  the  provision  for  taxes  in  the  consolidated 
statements of operations. If we are eventually able to recognize our uncertain positions, our effective tax rate would be reduced. We 
currently have a full valuation allowance against our net deferred tax asset which would impact the timing of the effective tax rate 
benefit should any of these uncertain tax positions be favorably settled in the future. Any adjustments to our uncertain tax positions 
would result in an adjustment of our net operating loss or tax credit carry forwards rather than resulting in a cash outlay. 

We  file  income  tax  returns  in  the  U.S.,  California  and  other  states,  and  various  foreign  jurisdictions.  We  are  currently  not  the 
subject of any income tax examinations. In general, the earliest open year subject to examination is 2004, although depending upon 
jurisdiction, tax years may remain open, subject to certain limitations. 

Recent Accounting Pronouncements 

FASB Statement of Position No. 157-2  

In February 2008, the FASB issued FASB Staff Position 157-2, Effective Date of FASB Statement No. 157 (FSP 157-2), which 
delays  the  effective  date  of  SFAS  No.  157  to  fiscal  years  beginning  after  November  15,  2008,  for  all  nonfinancial  assets  and 
nonfinancial liabilities, except for items that are recognized or disclosed at fair value in the financial statements on a recurring basis (at 
least annually). In accordance with FSP 157-2, the fair value measurements for non-financial assets and liabilities is required to be 
adopted effective for fiscal years beginning after November 15, 2008 We believe the adoption of the delayed items of SFAS No. 157 
will not have a material impact on our financial statements. 

EITF 07-1 

In  December  2007,  the  FASB  ratified  EITF  Issue  No.  07-1,  Accounting  for  Collaborative  Arrangements,  which  defines 
collaborative  arrangements  and  establishes  reporting  and  disclosure  requirements  for  transactions  between  participants  in  a 
collaborative arrangement and between participants in the arrangements and third parties. This issue is effective retrospectively to all 
prior periods presented for all collaborative arrangements existing as of the effective date for fiscal years beginning after December 
15, 2008. We believe the adoption of EITF 07-1 will not have a material impact on our financial statements. 

FSP APB 14-1 

In May 2008, the FASB issued FSP Accounting Principles Board 14-1 “Accounting for Convertible Debt Instruments That May Be 
Settled  in  Cash  upon  Conversion  (Including  Partial  Cash  Settlement)”  (FSP  APB  14-1).  FSP  APB  14-1  addresses  instruments 
commonly  referred  to  as  Instrument  C  from  EITF  90-19,  which  requires  the  issuer  to  settle  the  principal  amount  in  cash  and  the 
conversion spread in cash or net shares at the issuer’s option. FSP APB 14-1 requires the issuer of these instruments account for the 
liability (debt) and equity (conversion option) components of the instrument in a manner that reflects the issuer’s nonconvertible debt 
borrowing rate. FSP APB 14-1 is effective for fiscal years beginning after December 15, 2008 and interim periods within those fiscal 
years  on  a  retroactive  basis.  Early  application  is  not  permitted.  The  noteholders  may  convert  outstanding  convertible  subordinated 
notes  to  shares  of  our  common  stock  only,  therefore  we  do  not  expect  FSP  APB  14-1  to  have  a  material  impact  on  our  financial 
position or results of operations. 

Note 2—Cash, Cash Equivalents, and Available-For-Sale Investments  

Cash, cash equivalents, and available-for-sale investments are as follows (in thousands): 

Cash and cash equivalents 
Short-term investments (less than one year to maturity)

Total cash, cash equivalents, and available-for-sale investments

Estimated Fair Value at

December 31, 2008 
$  155,584 
223,410 
$  378,994 

  December 31, 2007

$

76,293
406,060
$ 482,353

66 

 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
Our portfolio of cash, cash equivalents, and available-for-sale investments includes (in thousands): 

U.S. corporate commercial paper 
Obligations of U.S. corporations 
Obligations of U.S. government agencies 
Cash and money market funds 

Total cash, cash equivalents, and available-for-sale investments

Estimated Fair Value at

December 31, 2008 
$  115,658 
26,275 
91,667 
145,394 
$  378,994 

  December 31, 2007

$ 293,866
100,727
37,333
50,427
$ 482,353

The  primary  objective  of  our  investment  activities  is  to  preserve  principal  while  at  the  same  time  maximizing  yields  without 
significantly  increasing  risk.  To  achieve  this  objective,  we  invest  in  liquid,  high  quality  debt  securities.  Our  investments  in  debt 
securities are subject to interest rate risk. To minimize the exposure due to an adverse shift in interest rates, we invest in short-term 
securities and maintain a weighted average maturity of one year or less. At December 31, 2008, the average portfolio duration was 
approximately  two  months  and  the  contractual  maturity  of  any  single  investment  did  not  exceed  twelve  months.  At  December  31, 
2007,  the  average  portfolio  duration  was  approximately  four  months  and  the  contractual  maturity  of  any  single  investment  did  not 
exceed twelve months 

Gross unrealized gains and losses were insignificant at December 31, 2008 and at December 31, 2007. The gross unrealized losses 
were primarily due to changes in interest rates on fixed income securities. We have a history of holding our investments to maturity 
and we have the ability and intent to hold our debt securities to maturity when they will be redeemed at full par value. Accordingly, 
we consider these unrealized losses to be temporary and have not recorded a provision for impairment. 

During  the  year  ended  December  31,  2008,  we  sold  available-for-sale  securities  to  fund  our  convertible  subordinated  note 
repurchase. We received proceeds from these sales totaling $70.1 million and realized a gain of $0.1 million in the income statement 
for the year period ended December 31, 2008. 

At December 31, 2008 and 2007, we had letter of credit arrangements with certain financial institutions and vendors, including our 

landlord, totaling $2.9 million and $2.8 million, respectively. These letters of credit are secured by investments of similar amounts. 

The following table represents the fair value hierarchy for our financial assets  measured at fair value on a recurring basis as of 

December 31, 2008 (in thousands): 

Money market funds 
U.S. corporate commercial paper 
Obligations of U.S. corporations 
Obligations of U.S. government agencies 
Cash equivalents and available-for-sale investments 
Cash 

Cash, Cash equivalents, and available-for-sale investments

____________ 

Level 1—Quoted prices in active markets for identical assets or liabilities.  

Level 1 

    Level 2 

  Level 3

Total

$ 134,686   $ 

—  $ — $ 134,686
115,658
—    115,658  —
26,275
26,275  —
—   
91,667
91,667  —
—    
$ 134,686   $  233,600  $ — $ 368,286
10,708
$ 378,994

Level  2—Inputs  other  than  Level  1  that  are  observable,  either  directly  or  indirectly,  such  as  quoted  prices  for  similar  assets  or 
liabilities;  quoted  prices  in  markets  that  are  not  active;  or  other  inputs  that  are  observable  or  can  be  corroborated  by 
observable market data for substantially the full term of the assets or liabilities. 

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or 

liabilities. 

67 

 
 
 
  
  
 
 
 
 
 
 
  
 
 
   
 
   
 
 
 
 
 
Note 3—Inventory  

Inventory consists of the following (in thousands):  

Raw materials 
Work-in-process 
Finished goods 
Total 

December 31,

2008
$ 6,964 $
1,743
612

2007
9,522
1,749
916
$ 9,319 $ 12,187

Inventory consists of raw materials, work-in-process, and finished goods for our commercial PEGylation business. 

Reserves are determined using specific identification plus an estimated reserve for potential defective or excess inventory based on 
historical experience or projected usage. Inventories are reflected net of reserves of $5.0 million and $5.8 million as of December 31, 
2008 and 2007, respectively. 

Note 4—Property and Equipment  

Property and equipment consist of the following (in thousands):  

Building and leasehold improvements 
Laboratory equipment 
Manufacturing equipment 
Furniture, fixtures and other equipment 
Construction-in-progress 

Property and equipment at cost 

Less: accumulated depreciation 
Property and equipment, net 

December 31,

2008
$  62,260 $
24,549
8,682
14,717
6,875
$  117,083 $
(43,505)
$  73,578 $

2007
114,210
48,425
18,493
21,169
18,374
220,671
(106,251)
114,420

Building and leasehold improvements include our commercial manufacturing, clinical manufacturing, research and development 
and administrative facilities and the related improvements to these facilities. Laboratory and manufacturing equipment includes assets 
that  support  both  our  manufacturing  and  research  and  development  efforts.  Construction-in-progress  includes  assets  being  built  to 
enhance our manufacturing and research and development programs. Property and equipment includes assets acquired through capital 
leases,  please  refer  to  Note  6  of  Notes  to  Consolidated  Financial  Statements  for  additional  information  on  assets  acquired  through 
capital leases. During the year ended December 31, 2008, we capitalized $1.9 million of purchased software costs, which are included 
in furniture, fixtures and other equipment. 

Depreciation  expense,  including  depreciation  of  assets  acquired  through capital  leases,  for  the  years  ended  December  31,  2008, 

2007, and 2006 was $19.8 million, $25.9 million, and $26.8 million, respectively. 

On  December  31,  2008,  we  sold  certain  assets  and  obligations  related  to  our  pulmonary  technology,  development  and 
manufacturing  operations  to  Novartis  Pharmaceuticals  Corporation  and  Novartis  Pharma  AG  (together  referred  to  as  Novartis), 
including property and equipment with a gross book value of $108.0 million, accumulated depreciation of $70.7 million, and a net 
book value of $37.3 million. Please refer to Note 11 of Notes to Consolidated Financial Statements for additional information related 
to the sale of certain pulmonary assets to Novartis. 

In accordance with SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, we periodically review our 
Property and Equipment for recoverability whenever events or changes in circumstances indicate that the carrying value may not be 
recoverable.  During  the  years  ended  December  31,  2008,  2007,  and  2006,  we  recorded  impairment  charges  on  our  Property  and 
Equipment of $1.5 million for a specialized dryer in our PEGylation commercial manufacturing facility, $28.4 million for Exubera-
related property and equipment, and $2.8 million for our property and equipment at Bradford, UK due to shut down of its operations, 
respectively. Please refer to Note 13 of Notes to Consolidated Financial Statements for additional information related to Impairment of 
Long-Lived Assets. 

68 

 
 
 
 
  
  
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
Note 5—Convertible Subordinated Notes  

The outstanding balance of our convertible subordinated notes is as follows (in thousands): 

3.25% Notes due September 2012 

Semi-Annual 
Interest Payment Dates 
March 28, September 28 

December 31,

2008

2007

 $  214,955 $ 315,000

Our convertible subordinated notes are unsecured and subordinated in right of payment to any future senior debt. Costs related to 
the issuance of these convertible notes are recorded in other assets in our Consolidated Balance Sheets and are generally amortized to 
interest  expense  on  a  straight-line  basis  over  the  contractual  life  of  the  notes.  The  unamortized  deferred  financing  costs  were  $2.2 
million and $5.1 million as of December 31, 2008 and 2007, respectively. 

Gain on Extinguishment of Debt 

During the fourth quarter of 2008, we repurchased $100.0 million of our 3.25% notes for $47.8 million. The recognized gain on 
debt  extinguishment  of  $50.1  million  is  net  of  transaction  costs  of  $1.0  million  and  accelerated  amortization  of  deferred  financing 
costs of $1.1 million. 

Conversion and Redemption 

The  notes  are convertible  at  the  option  of  the  holder  at  any  time  on  or  prior  to  maturity  into  shares of  our  common  stock.  The 
3.25%  Notes  have  a  conversion  rate  of  46.4727  shares  per  $1,000  principal  amount,  which  is  equal  to  a  conversion  price  of 
approximately $21.52. Additionally, at any time prior to maturity, if a fundamental change as defined in the 3.25% subordinated debt 
indenture occurs, we may be required to pay a  make-whole premium on notes converted in connection therewith by increasing the 
conversion rate applicable to the notes. 

We may redeem the 3.25% Notes in whole or in part for cash at a redemption price equal to 100% of the principal amount of the 
Notes plus any accrued but unpaid interest if the closing price of the common stock has exceeded 150% of the conversion price for at 
least 20 days in any consecutive 30 day trading period. 

Note 6—Capital Leases  

We lease office space and office equipment under capital lease arrangements. The gross carrying value by major asset class and 

accumulated depreciation included in Property and equipment as of December 31, 2008 and 2007 are as follows (in thousands): 

December 31,

2008

2007

Building and leasehold improvements 
Furniture, fixtures and other equipment 
Construction in progress 

Total assets recorded under capital leases 

Less: accumulated depreciation 

Net assets recorded under capital leases 

Building Lease 

261
—

$  23,962 $ 23,962
591
1,602
$  24,223 $ 26,155
(6,124)
$  16,173 $ 20,031

(8,050)

We lease office space at 201 Industrial Road in San Carlos, California under capital lease arrangements. During the year ended 
December  31,  2007,  we  modified  our  existing  lease  agreement  to  increase  our  office  space  by  20,123  square  feet  of  additional 
premises. We re-evaluated the lease as amended and continue to classify it as a capital lease. 

Under the terms of the lease, the rent will escalate 2% in October of each year for the original leased premises and the rent will 
escalate 3% in November of each year for the additional leased premises. The lease termination date for the original and additional 
premises is October 5, 2016. 

69 

 
 
 
 
  
 
  
   
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
Office Equipment 

In  November  2007,  we  entered  into  a  twelve-month  lease  with  Cisco  Systems  Capital  Corporation  related  to  communication 

equipment. In October 2008, the lease term ended and we purchased the equipment for $1. 

Future Minimum Lease Payments 

Future minimum payments for our capital leases at December 31, 2008 are as follows (in thousands): 

Years ending December 31, 

2009 
2010 
2011 
2012 
2013 
2014 and thereafter 

Total minimum payments required 
Less: amount representing interest 
Present value of future payments 
Less: current portion 
Non-current portion 

Note 7—Litigation Settlement  

$

$

$

$

4,717
4,752
4,907
4,958
5,064
14,424
38,822
(17,190)
21,632
(1,285)
20,347

On  June  30,  2006,  we,  our  subsidiary  Nektar  AL,  and  a  former  officer,  Milton  Harris,  entered  into  a  settlement  agreement  and 
general release with the University of Alabama, Huntsville (UAH) related to an intellectual property dispute. Under the terms of the 
settlement  agreement,  we,  Nektar  AL,  Mr.  Harris  and  UAH  agreed  to  full  and  complete  satisfaction  of  all  claims  asserted  in  the 
litigation in exchange for $25.0 million in cash payments. We and Mr. Harris made an initial payment of $15.0 million on June 30, 
2006, of which we paid $11.0 million and Mr. Harris paid $4.0 million. During the year ended December 31, 2006, we recorded a 
litigation  settlement  charge  of  $17.7  million,  which  reflects  the  net  present  value  of  the  settlement  payments  using  an  8%  annual 
discount rate. In June 2007 and 2008, respectively, we paid our annual $1.0 million installment payments. As of December 31, 2008, 
our accrued liability related to the UAH settlement was $6.0 million, which is the net present value of our eight annual $1.0 million 
payments remaining. 

Note 8—Commitments and Contingencies  

Unconditional Purchase Obligations 

As of December 31, 2008, we had approximately $17.0 million of unconditional purchase obligations for purchases of goods and 
services  in  2009  that  have  not  been  recognized  on  our  consolidated  balance  sheet.  These  obligations  include  approximately  $6.5 
million  for  research  and  development  activities  pertaining  to our  ongoing  proprietary  development  of  NKTR-102,  NKTR-105,  and 
NKTR-118, $3.4 million for early research activities pertaining to PEGylation and advanced polymer conjugate drug candidates, $2.7 
million for capital projects to enhance our manufacturing capabilities, research and development programs, and facilities, $1.4 million 
for  inventory  purchases  related  to  PEGylation  and  advanced  polymer  conjugate  programs,  and  $2.0  million  for  partnered  contract 
research programs. 

Royalty Expense 

We have certain royalty commitments associated with the shipment and licensing of certain products. Royalty expense, which is 
reflected in cost of goods sold in our Consolidated Statements of Operations, was approximately $4.8 million, $3.9 million, and $5.5 
million  for  the  years  ended  December  31,  2008,  2007,  and  2006,  respectively.  The  overall  maximum  amount  of  the  obligations  is 
based upon sales of the applicable product and cannot be reasonably estimated. 

70 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Operating Leases 

For the years ended December 31, 2008, 2007, and 2006, rent expense for operating leases was approximately $3.5 million, $4.3 

million, and $4.1 million. 

We  were  a  party  of  an  operating  lease  for  our  San  Carlos  manufacturing  facility  through  2012.  On  December  31,  2008,  this 
operating lease was assigned to Novartis Pharmaceuticals Inc as part of the pulmonary asset sale. We have no further liabilities related 
to this lease. 

Legal Matters 

From  time  to  time,  we  may  be  involved  in  lawsuits,  claims,  investigations  and  proceedings,  consisting  of  intellectual  property, 
commercial,  employment  and  other  matters,  which  arise  in  the  ordinary  course  of  business.  In  accordance  with  the  SFAS  No.  5, 
Accounting for Contingencies, we make a provision for a liability when it is both probable that a liability has been incurred and the 
amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impact of 
negotiations, settlements, ruling, advice of legal counsel, and other information and events pertaining to a particular case. Litigation is 
inherently  unpredictable.  If  any  unfavorable  ruling  were  to  occur  in  any  specific  period,  there  exists  the  possibility  of  a  material 
adverse impact on the results of operations of that period or on our cash flows and liquidity. 

Indemnifications in Connection with Commercial Agreements 

As  part  of  our  collaboration  agreement  with  our  partners  related  to  the  license,  development,  manufacture  and  supply  of  drugs 
based on our proprietary technologies, we generally agree to defend, indemnify and hold harmless our partners from and against third 
party liabilities arising out of the agreement, including product liability (with respect to our activities) and infringement of intellectual 
property  to  the  extent  the  intellectual  property  is  developed  by  us  and  licensed  to  our  partners.  The  term  of  these  indemnification 
obligations is generally perpetual any time after execution of the agreement. There is generally no limitation on the potential amount 
of future payments we could be required to make under these indemnification obligations. 

As  part  of  our  pulmonary  asset  sale  to  Novartis  that  closed  on  December  31,  2008,  we  and  Novartis  made  representations  and 
warranties and entered into certain covenants and ancillary agreements which are supported by an indemnity obligation. In the event it 
were  determined  that  we  breached  any  of  the  representations  and  warranties  or  covenants  and  agreements  made  by  us  in  the 
transaction documents, we could incur an indemnification liability depending on the timing, nature, and amount of any such claims. 

To date we have not incurred costs to defend lawsuits or settle claims related to these indemnification obligations. If any of our 
indemnification obligations is triggered, we may incur substantial liabilities. Because the obligated amount under these agreements is 
not explicitly stated, the overall maximum amount of the obligations cannot be reasonably estimated. No liabilities have been recorded 
for these obligations on our Consolidated Balance Sheets as of December 31, 2008 or 2007. 

Indemnification of Underwriters and Initial purchasers of our Securities 

In connection with our sale of equity and convertible debt securities, we have agreed to defend, indemnify and hold harmless our 
underwriters  or  initial  purchasers,  as  applicable,  as  well  as  certain  related  parties  from  and  against  certain  liabilities,  including 
liabilities under the Securities Act of 1933, as amended. The term of these indemnification obligations is generally perpetual. There is 
no limitation on the potential amount of future payments we could be required to make under these indemnification obligations. We 
have never incurred costs to defend lawsuits or settle claims related to these indemnification obligations. If any of our indemnification 
obligations  are  triggered,  however,  we  may  incur  substantial  liabilities.  Because  the  obligated  amount  of  this  agreement  is  not 
explicitly  stated,  the  overall  maximum  amount  of  the  obligations  cannot  be  reasonably  estimated.  Historically,  we  have  not  been 
obligated  to  make  significant  payments  for  these  obligations,  and  no  liabilities  have  been  recorded  for  these  obligations  in  our 
Consolidated Balance Sheets as of December 31, 2008 or 2007. 

71 

 
 
 
 
 
 
 
 
 
 
 
 
 
Director and Officer Indemnifications 

As permitted under Delaware law, and as set forth in our Certificate of Incorporation and our Bylaws, we indemnify our directors, 
executive officers, other officers, employees, and other agents for certain events or occurrences that arose while in such capacity. The 
maximum potential amount of future payments we could be required to make under this indemnification is unlimited; however, we 
have insurance policies that may limit our exposure and may enable us to recover a portion of any future amounts paid. Assuming the 
applicability  of  coverage,  the  willingness  of  the  insurer  to  assume  coverage,  and  subject  to  certain  retention,  loss  limits  and  other 
policy provisions, we believe any obligations under this indemnification are not material, other than an initial $500,000 per incident 
for securities related claims and $250,000 per incident for non-securities related claims retention deductible per our insurance policy. 
However, no assurances can be given that the covering insurers will not attempt to dispute the validity, applicability, or amount of 
coverage  without  expensive  litigation  against  these  insurers,  in  which  case  we  may  incur  substantial  liabilities  as  a  result  of  these 
indemnification obligations. Because the obligated amount of this agreement is not explicitly stated, the overall maximum amount of 
the  obligations  cannot  be  reasonably  estimated.  Historically,  we  have  not  been  obligated  to  make  significant  payments  for  these 
obligations, and no liabilities have been recorded for these obligations in our Consolidated Balance Sheets as of December 31, 2008 or 
2007. 

Note 9—Stockholders’ Equity  

Preferred Stock 

We have authorized 10,000,000 shares of Preferred Stock, each share having a par value of $0.0001. Of these shares, 3,100,000 
shares are designated Series A Junior Participating Preferred Stock (Series A Preferred Stock). The remaining shares are undesignated. 
We have no preferred shares issued and outstanding as of December 31, 2008 or 2007. 

Series A Preferred Stock 

On June 1, 2001, the Board of Directors approved the adoption of a Share Purchase Rights Plan. Terms of the Rights Plan provide 
for a dividend distribution of one preferred share purchase right for each outstanding share of our Common Stock. The Rights have 
certain anti-takeover effects and will cause substantial dilution to a person or group that attempts to acquire us on terms not approved 
by our Board of Directors. The dividend distribution was payable on June 22, 2001, to the stockholders of record on that date. Each 
Right entitles the registered holder to purchase from us one one-hundredth of a share of Series A Preferred Stock at a price of $225.00 
per one one-hundredth of a share of Series A Preferred Stock, subject to adjustment. Each one one-hundredth of a share of Series A 
Preferred Stock has designations and powers, preferences and rights, and the qualifications, limitations and restrictions which make its 
value approximately equal to the value of a share of Common Share. 

The Rights are not exercisable until the Distribution Date (as defined in the Certificate of Designation for the Series A Preferred 
Stock). The Rights will expire on June 1, 2011, unless the Rights are earlier redeemed or exchanged by us. Each share of Series A 
Preferred  Stock  will  be  entitled  to  a  minimum  preferential  quarterly  dividend  payment  of  $1.00,  or  if  greater  than  $1.00,  will  be 
entitled  to  an  aggregate  dividend  of  100  times  the  dividend  declared  per  share  of  Common  Stock.  In  the  event  of  liquidation,  the 
holders of the Series A Preferred Stock would be entitled to $100 per share or, if greater than $100, an aggregate payment equal to 100 
times the payment made per share of Common Stock. Each share of Series A Preferred Stock will have 100 votes, voting together with 
the Common Stock. Finally, in the event of any merger, consolidation or other transaction in which our Common Stock is exchanged, 
each  share  of  Series  A  Preferred  Stock  will  be  entitled  to  receive  100  times  the  amount  of  consideration  received  per  share  of 
Common Stock. Because of the nature of the Series A Preferred Stock dividend and liquidation rights, the value of one one-hundredth 
of a share of Series A Preferred Stock should approximate the value of one share of Common Stock. The Series A Preferred Stock 
would rank junior to any other future series of preferred stock. Until a Right is exercised, the holder thereof, as such, will have no 
rights as a stockholder, including, without limitation, the right to vote or to receive dividends. 

72 

 
 
 
 
 
 
 
 
 
 
Reserved Shares 

At December 31, 2008, we have reserved shares of common stock for issuance as follows (in thousands): 

Convertible subordinated notes 
Option Plans 
ESPP 
401(k) retirement plans 
Total 

Stock Option Plans 

  As of December 31, 2008

9,989
28,922
161
220
39,292

The following table summarizes information with respect to shares of our common stock that may be issued under our existing 

equity compensation plans as of December 31, 2008 (share number in thousands): 

Plan Category 
Equity compensation plans approved by  

security holders (2) 

Equity compensation plans not approved by  

security holders 

Total 

____________ 

Number of securities to be 
issued upon exercise of 
outstanding options 

(a) (1) 

Weighted-average 
exercise price of 
outstanding options 
(b)   

 Number of securities remaining
  available for issuance under 
equity compensation plans 
  (excluding securities reflected 
in column(a)) 
(c) 

7,833

5,948
13,781

$ 12.53 

$ 11.66 
$ 12.16 

12,443

2,827
15,270

(1)  Does  not  include  options  31,738  shares  we  assumed in connection with the acquisition of  Shearwater  Corporation (with a

weighted-average exercise price of $0.03 per share).

(2) 

Includes shares of common stock available for future issuance under our ESPP as of December 31, 2008. 

2008 Equity Incentive Plan 

Our 2008 Equity Incentive Plan (2008 Plan) was adopted by the Board of Directors on March 20, 2008 and was approved by our 
stockholders on June 6, 2008. The purpose of the 2008 Equity Incentive Plan is to attract and retain qualified personnel, to provide 
additional  incentives  to  our  employees,  officers,  consultants  and  employee  directors  and  to  promote  the  success  of  our  business. 
Pursuant to the 2008 Plan, we may grant or issue incentive stock options to employees and officers and non-qualified stock options, 
rights  to  acquire  restricted  stock,  restricted  stock  units,  and  stock  bonuses  to  consultants,  employees,  officers  and  non-employee 
directors. 

The maximum number of shares of our common stock that may be issued or transferred pursuant to awards under the 2008 Plan is 
9,000,000 shares. Shares issued in respect of any stock bonus or restricted stock award granted under the 2008 Plan will be counted 
against  the  plan’s  share  limit  as  1.5  shares  for  every  one  share  actually  issued  in  connection  with  the  award.  The  2008  Plan  will 
terminate on March 20, 2018, unless earlier terminated by the Board. 

The maximum term of a stock option under the 2008 Equity Incentive Plan is eight years, but if the optionee at the time of grant 
has voting power of more than 10% of our outstanding capital stock, the maximum term of an incentive stock option is five years. The 
exercise price of stock options granted under the 2008 Plan must be at least equal to 100% (or 110% with respect to holders of more 
than 10% of the voting power of our outstanding capital stock) of the fair market value of the stock subject to the option as determined 
by the closing price of our common stock on the Nasdaq Global Market on the date of grant. 

To the extent that shares are delivered pursuant to the exercise of a stock option, the number of underlying shares as to which the 
exercise related shall be counted against the applicable share limits of the 2008 Plan, as opposed to only counting the shares actually 
issued. Shares that are subject to or underlie awards which expire or for any reason are cancelled or terminated, are forfeited, fail to 
vest or for any other reason are not paid or delivered under the 2008 Plan will again be available for subsequent awards under the 2008 
Plan. 

73 

 
 
 
 
  
 
 
 
 
 
 
 
 
  
  
  
  
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2000 Equity Incentive Plan 

On April 19, 2000 the Board of Directors adopted our 2000 Equity Incentive Plan (2000 Plan) by amending and restating our 1994 
Equity Incentive Plan. The purpose of the 2000 Equity Incentive Plan is to attract and retain qualified personnel, to provide additional 
incentives to our employees, officers, consultants and employee directors and to promote the success of our business. Pursuant to the 
2000 Plan, we may grant or issue incentive stock options to employees and officers and non-qualified stock options, rights to acquire 
restricted stock, restricted stock units, and stock bonuses to consultants, employees, officers and non-employee directors. 

The maximum term of a stock option under the 2000 Plan is eight years, but if the optionee at the time of grant has voting power 
of more than 10% of our outstanding capital stock, the maximum term of an incentive stock option is five years. The exercise price of 
incentive stock options granted under the 2000 Equity Incentive Plan must be at least equal to 100% (or 110% with respect to holders 
of more than 10% of the voting power of our outstanding capital stock) of the fair market value of the stock subject to the option as 
determined by the closing price of our common stock on the Nasdaq Global Market on the date of grant. 

The  Board  may  amend  the  2000  Plan  at  any  time,  although  certain  amendments  would  require  stockholder  approval.  The 2000 
Plan  will  terminate  on  February  9,  2010,  unless  earlier  terminated  by  the  Board.  On  June  1,  2006,  our  stockholders  approved  an 
amendment to the 2000 Plan to increase the number of shares of Common Stock authorized for issuance under the Purchase Plan to a 
total of 18,250,000 shares. 

2000 Non-Officer Equity Incentive Plan  

Our 1998 Non-Officer Equity Incentive Plan was adopted by the Board of Directors on August 18, 1998, and was amended and 
restated  in  its  entirety  and  renamed  the  2000  Non-officer  Equity  Incentive  Plan  on  June  6,  2000  (  2000  Non-Officer  Plan).  The 
purpose of the 2000 Non-Officer Plan is to attract and retain qualified personnel, to provide additional incentives to employees and 
consultants and to promote the success of our business. Pursuant to the 2000 Non-Officer Plan, we may grant or issue non-qualified 
stock options, rights to acquire restricted stock and stock bonuses to employees and consultants who are neither Officers nor Directors 
of Nektar. The maximum term of a stock option under the 2000 Non-Officer Plan is eight years. The exercise price of stock options 
granted under the 2000 Non-Officer Plan are determined by the Board of Directors by reference to closing price of our common stock 
on the Nasdaq Global Market. 

Non-Employee Directors’ Stock Option Plan  

On February 10, 1994, our Board of Directors adopted the Non-Employee Directors’ Stock Option Plan under which options to 
purchase  up  to  400,000  shares  of  our  Common  Stock  at  the  then  fair  market  value  may  be  granted  to  our  non-employee  directors. 
There are no remaining options available for grant under this plan as of December 31, 2008. 

Restricted Stock Units 

During  the  years  ended  December  31,  2008,  2007  and  2006,  we  issued  Restricted  Stock  Unit  awards  (RSU  awards)  to  certain 
officers, non-employees, directors, employees and consultants. RSU awards are similar to restricted stock in that they are issued for no 
consideration; however, the holder generally is not entitled to the underlying shares of common stock until the RSU award vests. Also, 
because the RSU awards are issued for $0.01, the grant-date fair value of the award is equal to the intrinsic value of our common stock 
on the date of grant. The RSU awards were issued under both the 2000 Plan and the 2000 Non-Officer Plan and are settled by delivery 
of shares of our common stock on or shortly after the date the awards vest. 

We issued approximately 48,000, 345,000 and 1,089,000 RSU awards during the years ended December 31, 2008, 2007 and 2006. 
The RSU awards issued in 2008 and 2007 are service based awards and vest based on the passage of time. Approximately 1,010,000 
of  the  RSU  awards  issued  in  2006  vest  upon  the  achievement  of  three  performance-based  milestones.  During  the  year  ended 
December 31, 2007, one of the performance based milestones was achieved and 174,035 shares vested and were released. Beginning 
with shares granted in the year ended December 31, 2005, each RSU award depletes the pool of options available for grant under our 
equity incentive plans by a ratio of 1:1.5. 

74 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Employee Stock Purchase Plan 

In February 1994, our Board of Directors adopted the Employee Stock Purchase Plan (ESPP), pursuant to section 423(b) of the 
Internal Revenue Code of 1986. Under the ESPP, 800,000 shares of common stock have been authorized for issuance. The terms of 
the  ESPP  provide  eligible  employees  with  the  opportunity  to  acquire  an  ownership  interest  in  Nektar  through  participation  in  a 
program of periodic payroll deductions for the purchase of our common stock. Employees may elect to enroll or re-enroll in the plan 
on a semi-annual basis. Stock is purchased at 85% of the lower of the closing price on the first day of the enrollment period or the last 
day of the enrollment period. 

401(k) Retirement Plan  

We sponsored a 401(k) retirement plan whereby eligible employees may elect to contribute up to the lesser of 60% of their annual 
compensation or the statutorily prescribed annual limit allowable under Internal Revenue Service regulations. The 401(k) plan permits 
us to make matching contributions on behalf of all participants. 

An amendment was made to the current 401(k) plan, effective January 1, 2008, to provide each eligible participant with a base 
employer  matching  cash  contribution  of  $1,000  and  up  to  an  additional  $2,000  in  matching  cash  contributions  (for  a  maximum 
aggregate  of $3,000).  The  base  annual  employer  matching  contribution of $1,000  accrues  to  the participant for participating  at  any 
level in the 401(k) plan during the calendar year. The additional matching contribution accrues to the participant on a $1 for $1 basis 
based upon each participant’s annual contribution to the 401(k) plan. In order for a participant to be eligible for any amount of the 
employer  contribution  match,  the  participant  must  be  an  employee  at  the  end  of  the  calendar  year.  If  the  participant  commences 
employment during the calendar year, the base matching contribution will be pro-rated based on the number of calendar quarters the 
participant is employed during the year. Both the base and additional employer matching contribution are 100% vested on the date of 
the match. 

In 2007 and 2006, we matched the lesser of 75% of year to date participant contributions or 3% of eligible wages. The matching 
contribution is in the form of shares of our common stock Vesting of the employer match, plus actual earnings thereon, is based on 
years of service. Participants vest 33% in employer matching contributions each year with 100% vesting after three years of service. 

We issued approximately 161,000 shares and 103,000 shares of our common stock valued at approximately $1.6 million and $1.8 
million in connection with the employer matching common stock contributions in 2007 and 2006 respectively. During part of 2007, 
shares  reserved  for  issuance  related  to  matching  contributions  that  had  been  previously  been  approved  by  our  Board  of  Directors 
became fully depleted. During the year ended December 31, 2007, our Board of Directors approved an additional 300,000 shares to be 
reserved for issuance related to matching contributions. 

Change in Control Severance Plan 

On December 6, 2006, the Board of Directors approved a Change of Control Severance Benefit Plan (CIC Plan) and on February 
14, 2007 and October 21, 2008, the Board of Directors amended and restated the CIC Plan. The CIC Plan is designed to make certain 
benefits  available  to  eligible  employees  of  the  Company  in  the  event  of  a  change  of  control  of  the  Company  and,  following  such 
change  of  control,  an  employee’s  employment  with  the  Company  or  successor  company  is  terminated  in  certain  specified 
circumstances. We adopted the CIC Plan to support the continuity of the business in the context of a change of control transaction. 
The CIC Plan was not adopted in contemplation of any specific change of control transaction. A brief description of the material terms 
and conditions of the CIC Plan is provided below. 

Under the CIC Plan, in the event of a change of control of the Company and a subsequent termination of employment initiated by 
the Company or a successor company other than for Cause or initiated by the employee for a Good Reason Resignation (as hereinafter 
defined)  in  each  case  within  twelve  months  following  a  change  of  control  transaction,  (i)  the  Chief  Executive  Officer  would  be 
entitled  to  receive  cash  severance  pay  equal  to  24  months  base  salary  plus  annual  target  incentive  pay,  the  extension  of  employee 
benefits over this severance period and the full acceleration of unvested outstanding equity awards, and (ii) the Senior Vice Presidents 
and Vice Presidents (including Principal Fellows) would each be entitled to receive cash severance pay equal to twelve months base 
salary  plus  annual  target  incentive  pay,  the  extension  of  employee  benefits  over  this  severance  period  and  the  full  acceleration  of 
unvested outstanding equity awards. In the event of a change of control of the Company and a subsequent termination of employment 
initiated  by  the  Company  or  a  successor  company  other  than  for  Cause  (as  hereinafter  defined)  within  twelve  months  following  a 
change of control transaction, all other employees would each be entitled to receive cash severance pay equal to 6 months base salary 
plus annual target incentive pay, the extension of employee benefits over this severance period and the full acceleration of each such 
employee’s unvested outstanding equity awards. 

On  December  6,  2006,  the  Board  of  Directors  approved  an  amendment  to  all  outstanding  stock  awards  held  by  non-employee 

directors to provide for full acceleration of vesting in the event of a change of control transaction. 

75 

 
 
 
 
 
 
 
 
 
 
 
 
 
Note 10—Collaborative Agreements  

We  have  entered  into  various  license  and  collaborative  research  and  development  agreements  with  pharmaceutical  and 
biotechnology companies. Under these arrangements, we are entitled to receive license fees, up-front payments, milestone payments 
when and if certain development or regulatory milestones are achieved, and/or reimbursement for research and development activities. 
All of our research and development agreements are generally cancelable by our partners without significant financial penalty to the 
partner.  Revenues  generated  from  our  collaboration  agreements  are  recorded  as  Collaboration  and  other  revenue  and  our  costs  of 
performing these services are included in Research and development expense. 

In accordance with these agreements, we recorded Collaboration and other revenue as follows (in thousands): 

Partner 
Novartis Vaccines and Diagnostics, Inc. 
Bayer Schering Pharma AG 
Bayer Healthcare LLC 
Pfizer Inc. 

Other 
Collaboration and other revenue 

Novartis Vaccines and Diagnostics, Inc. 

Tobramycin inhalation powder (TIP) 

Agreement

Tobramycin inhalation powder (TIP)
Cipro Inhale
BAY41-6651 (NKTR-061, Amikacin Inhale) 
Exubera® inhalation powder Next-generation 
inhaled insulin (NGI)

Years ended December 31,
2007

2008 

$  13,723  $ 17,036 $
  11,653 
  10,054 

8,116
1,306

2006
8,516
4,884
—

33,674
— 
  13,500 
17,088
$  48,930  $ 92,272 $ 64,162

49,490
16,324

We  were  party  to  a  collaborative  research,  development  and  commercialization  agreement  with  Novartis  Vaccines  and 
Diagnostics, Inc. related to the development of Tobramycin inhalation powder (TIP) for the treatment of lung infections caused by the 
bacterium Pseudomonas aeruginosa in cystic fibrosis patients. We were reimbursed for the cost of work performed on a revenue per 
annual  full-time  equivalent  (FTE)  basis,  plus  out  of  pocket  third  party  costs.  Revenue  recognized  approximates  the  cost  associated 
with these billable services. We recognized $13.2 million, $17.0 million, and $8.5 million in reimbursed research and development 
revenue during the years ended December 31, 2008, 2007, and 2006. 

Our  collaborative  research,  development  and  commercialization  agreement  with  Novartis  Vaccines  and  Diagnostics,  Inc.  for 
related  to  TIP  was  terminated  on  December  31,  2008.  As  part  of  the  termination,  we  relinquished  its  rights  to  future  research  and 
development funding and milestone payments, as well as to any future royalty payments or manufacturing revenue. 

Bayer Schering Pharma AG 

Cipro Inhale 

We  were  party  to  a  collaborative  research,  development  and  commercialization  agreement  with  Bayer  Schering  Pharma  AG 
related to the development of an inhaled powder formulation of Cipro Inhale for the treatment of chronic lung infections caused by 
Pseudomonas aeruginosa in cystic fibrosis patients. We were reimbursed for the cost of work performed on a revenue per annual FTE 
basis,  plus  out  of  pocket  third  party  costs.  Revenue  recognized  approximates  the  cost  associated  with  these  billable  services.  We 
recognized  $10.3  million,  $7.7  million,  and  $4.8  million  in  reimbursed  research  and  development  revenue  during  the  years  ended 
December 31, 2008, 2007, and 2006. 

As  of  December  31,  2008,  we  assigned  the  collaborative  research,  development  and  commercialization  agreement  to  Novartis 
Pharma AG. Pursuant to the terms of the Asset Purchase Agreement with Novartis, we maintain the right to receive potential royalties 
in the future based on net product sales if Cipro Inhale receives regulatory approval and is successfully commercialized. See Note 11 
to Notes to Consolidated Financial Statements for further information on the pulmonary asset sale to Novartis. 

76 

 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Bayer Healthcare LLC 

BAY41-6651 (NKTR-061, Amikacin Inhale) 

On  August  1,  2007,  we  entered  into  a  co-development,  license  and  co-promotion  agreement  with  Bayer  Healthcare  LLC  to 
develop  a  specially-formulated  inhaled  Amikacin  (BAY41-6651).  We  are  responsible  for  any  future  development  of  the  nebulizer 
device included in the Amikacin product through the completion of Phase 3 clinical trials and scale-up for commercialization. Bayer 
Healthcare LLC is responsible for most future clinical development and commercialization costs, all activities to support worldwide 
regulatory filings, approvals and related activities, further development of BAY41-6651 and final product packaging. We received an 
up-front payment of $40.0 million in 2007 and performance milestone payments of $20.0 million, of which we have recognized $10.1 
million  and  $1.3  million  during  the  years  ended  December  31,  2008  and  2007,  respectively.  We  are  entitled  to  development 
milestones and sales milestones upon achievement of certain annual sales targets and royalties based on annual worldwide net sales of 
BAY 41-6651. 

Pfizer Inc. 

Exubera® inhalation powder and Next-generation inhaled insulin (NGI)  

We were a party to collaboration agreements with Pfizer related to the development of Exubera and the next-generation inhaled 
insulin  that  terminated  on  November  9,  2007.  Under  the  terms  of  the  collaboration  agreements,  we  received  contract  research  and 
development  revenue  as  well  as  milestone  and  up-front  fees  related  to  the  Exubera  bulk  powder  insulin  manufacturing,  Exubera 
inhaler device manufacturing through our contract manufacturers, and development related to NGI. We were reimbursed for the cost 
of work performed on a revenue per annual FTE basis, plus out of pocket third party costs. Revenue recognized approximates the cost 
associated with these billable services. We recognized nil, $18.5 million, and $22.7 million, respectively, in reimbursed research and 
development revenue during the years ended December 31, 2008, 2007, and 2006. Please refer to Note 12 of Notes to Consolidated 
Financial Statements for further information on the termination of our collaborative agreements with Pfizer Inc. 

Note 11—Novartis Pulmonary Asset Sale  

On  December  31,  2008,  we  completed  the  sale  of  certain  assets  related  to  our  pulmonary  business,  associated  technology  and 
intellectual  property  to  Novartis  Pharma  AG  and  Novartis  Pharmaceuticals  Corporation  (together  referred  to  as  Novartis)  for  a 
purchase  price  of  $115.0  million  in  cash  (the  Novartis  Pulmonary  Asset  Sale).  Pursuant  to  the  asset  purchase  agreement  entered 
between Novartis and us, we transferred to Novartis certain assets and obligations related to our pulmonary technology, development 
and manufacturing operations including: 

•  dry  powder  and  liquid  pulmonary  technology  platform  including  but  not  limited  to  our  pulmonary  inhalation  devices, 

formulation technology, manufacturing technology and related intellectual property; 

•  manufacturing and associated development services payments for the Cipro Inhale program; 

•  manufacturing and royalty rights to the TIP program;  

•  capital  equipment,  information  systems  and  facility  lease  obligations  for  our  pulmonary  development  and  manufacturing 

facility in San Carlos, California; 

•  certain other interests that we had in two private companies, Pearl Therapeutics Inc. and Stamford Devices Limited; and 

•  approximately  140  of  our  personnel  primarily  dedicated  to  our  pulmonary  technology,  development  programs,  and 

manufacturing operations, whom Novartis hired immediately following the closing of the transaction. 

We  have  retained  all  of  our  rights  to  BAY41-6651  partnered  with  Bayer  Healthcare  LLC,  certain  royalty  rights  on  commercial 
sales  of  Cipro  Inhale  by  Bayer  Schering  Pharma  AG,  all  rights  to  the  ongoing  development  program  for  NKTR-063  and  certain 
intellectual property rights specific to inhaled insulin. 

77 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gain on sale of pulmonary assets 

On December 31, 2008, we recognized a Gain on sale of pulmonary assets for certain assets sold to Novartis, which is comprised 

of the following (in thousands): 

Proceeds from sale of certain pulmonary assets 

Transaction costs 
Net book value of property and equipment sold 
Equity investment in Pearl Therapeutics, net 
Goodwill related to pulmonary assets sold 
Other, net 

Gain on sale of pulmonary assets 

Additional Costs 

Year ended
December 31, 2008
$ 115,000
(4,609)
(37,291)
(2,658)
(1,930)
1,060
69,572

$

In addition to the transaction costs recorded as part of the Gain on sale of pulmonary assets, we expect to incur approximately $3.7 
million to $4.2 million of additional costs in connection with the Novartis Pulmonary Asset Sale, comprised of $1.9 million of one-
time employee termination costs, $1.0 million to $1.5 million to relocate our IT server room, and $0.8 million in other costs. Under 
our Transition Service Agreement with Novartis, we have until December 31, 2009 to relocate our server room. During 2008, we have 
recognized approximately $2.7 million of additional costs incurred in our Statement of operations within Research and development 
expenses, of which we paid $1.8 million. 

Note 12—Termination of Pfizer Agreements and Inhaled Insulin Program  

On November 9, 2007, we entered into a termination agreement and mutual release of our collaborative development and license 
agreements agreement with Pfizer and all other related agreements (Pfizer agreements). Under the termination agreement, we received 
a one-time payment of $135.0 million in November 2007 from Pfizer in satisfaction of all outstanding contractual obligations under 
our existing agreements relating to Exubera and NGI. Contractual obligations included unbilled product sales and contract research 
revenue through November 9, 2007, outstanding accounts receivable as of November 9, 2007, unrecovered capital costs at November 
9, 2007, and contract termination costs. 

On  February  12,  2008,  we  entered  into  a  Termination  and  2008  Continuation  Agreement  (TCA)  with  Tech  Group  pursuant  to 
which the manufacturing and supply agreement for the Exubera inhaler device (Exubera Inhaler MSA) was terminated in its entirety 
and we agreed to pay Tech Group $13.8 million in termination costs and $4.8 million in satisfaction of outstanding accounts payable. 
As part of the TCA, we agreed to compensate Tech Group to retain a limited number of core Exubera inhaler manufacturing personnel 
and  its  dedicated  Exubera  inhaler  manufacturing facility  for  a  limited  period  in 2008. We  also  entered  into  a  letter  agreement with 
Pfizer to retain a limited number of Exubera manufacturing personnel at Pfizer’s Terre Haute, Indiana manufacturing facility during 
March and April 2008. 

On February 14, 2008, we entered into a Termination and Mutual Release Agreement with Bespak pursuant to which the Exubera 
Inhaler MSA was terminated in its entirety and we agreed to pay Bespak £11.0 million, or approximately $21.6 million, including $3.0 
million in satisfaction of outstanding accounts payable and $18.6 million in termination costs and expenses that were due and payable 
under  the  termination  provisions  of  the  Exubera  Inhaler  MSA,  which  included  reimbursement  of  inventory,  inventory  purchase 
commitments, unamortized depreciation on property and equipment, severance costs and operating lease commitments. 

On April 9, 2008, we announced that we had ceased all negotiations with potential partners for Exubera and NGI as a result of new 
data analysis from ongoing clinical trials conducted by Pfizer which indicated an increase in the number of new cases of lung cancer 
in Exubera patients who were former smokers as compared to patients in the control group who were former smokers. Following the 
termination of our inhaled insulin programs on April 9, 2008, we terminated our continuation agreements with Tech Group and Pfizer. 

78 

 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gain on Termination of Collaborative Agreements, Net 

During  the  year  ended  December  31,  2007,  we  recognized  a  Gain  on  termination  of  collaborative  agreements,  net  which  is 

comprised of the following (in thousands): 

Pfizer termination settlement payment received 
Exubera Inhaler Manufacturing and Supply Agreement Termination

Tech Group 
Bespak 

Settlement of assets and liabilities related to Pfizer 
Gain on termination of collaborative agreements, net

Idle Exubera Manufacturing Capacity Costs 

Year ended
December 31, 2007
$ 135,000

(13,765)
(18,598)
102,637
(23,459)
79,178

$

Idle Exubera manufacturing capacity costs, which is disclosed as a component of Other cost of revenue, include costs payable to 
Pfizer  and  Tech  Group  under  our  continuation  agreements  and  internal  salaries,  benefits  and  stock-based  compensation  related  to 
Exubera  commercial  manufacturing  employees,  overhead  at  our  San  Carlos  manufacturing  facility,  including  rent,  utilities  and 
maintenance and depreciation of property and equipment. We incurred these costs from the termination of the Pfizer Agreements on 
November 9, 2007 through the termination of our inhaled insulin programs in April 2008. For the years ended December 31, 2008 and 
2007, we recognized Cost of idle Exubera manufacturing capacity of $6.8 million and $6.3 million, respectively. 

Accrued Expenses to Contract Manufacturers 

As of December 31, 2007, we recorded $40.4 million of accrued expenses to Bespak and Tech Group for outstanding accounts 
payable and termination costs and expenses that were due and payable under the termination provisions of the Exubera Inhaler MSA. 
This  liability  was  repaid  in  its  entirety  in  2008.  As  of  December  31,  2008,  we  have  no  further  liabilities  related  to  the  Pfizer 
Agreements. 

Note 13—Impairment of Long Lived Assets  

During the years ended December 31, 2008, 2007, and 2006, we recorded the following charges in the Impairment of long lived 

assets line item of our Consolidated Statements of Operations (in thousands): 

Years ended December 31,
2007

2008 

2006

Property and Equipment  

PEGylation manufacturing equipment 
Exubera-related 
Bradford, UK 
Construction in progress 

Aerogen core-technology intangible assets 
Impairment of long lived assets 

PEGylation manufacturing equipment 

28,396

 $  1,458  $

— $ —
—
— 1,156
— 2,757
— 5,497
 $  1,458  $ 28,396 $ 9,410

— 
— 
— 
— 

As  of  December  31,  2008,  we  determined  that  a  specialized  dryer  used  in  our  PEGylation  manufacturing  facility  was  not 
functioning properly and is not being used in operations currently. We performed an impairment analysis and determined the carrying 
value exceeded the fair value based on a discounted cash flow model. As a result, we recorded an impairment loss for the net book 
value of the equipment of $1.5 million. 

Exubera-related property and equipment 

On November 9, 2007, we entered into a termination agreement and mutual release with Pfizer related to Exubera and NGI. As a 
result,  we  performed  an  impairment  analysis  of  the  property  and  equipment  that  support  Exubera  commercial  operations  and  NGI 
(Exubera-related assets), including machinery and equipment at our contract manufacturer locations and machinery, equipment, and 
leasehold  improvements  in  San  Carlos  and  determined  the  fair  value  based  on  a  discounted  cash  flow  model.  As  of  December  31, 
2007,  we  concluded  that  the  carrying  value  exceeded  the  estimated  future  cash  flow  and  recorded  an  impairment  charge  of  $28.4 
million for the Exubera-related assets. See Note 12 for further discussion of the termination of the inhaled insulin programs. 

79 

 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
  
 
 
 
 
Bradford UK property and equipment 

In June 2006, we involuntarily terminated the majority of the personnel located at our Bradford, UK site, commenced with plans to 
wind-down the location and its related operations, and reassessed the useful life of the remaining laboratory and office equipment. We 
determined that these assets could not be redeployed and had no future or alternative use. Due to our revised estimate of the useful life 
of these assets, we accelerated approximately $1.2 million of remaining depreciation in the year ended December 31, 2006. 

Construction in progress 

In  December  2006,  we  determined  that  one  of  our  construction-in-progress  assets  would  no  longer  be  completed  based  on  the 
contract renegotiation with one of our collaboration partners and we recorded an impairment loss for the costs incurred to date of $2.8 
million. 

Aerogen core-technology intangible assets 

As part of the October 2005 acquisition of Aerogen, Inc., we also acquired $7.2 million in core technology intangible assets. In late 
December  2006,  we  entered  into  a  non-binding  letter  of  intent  to  sell  our  general  purpose  nebulizer  device  business  to  the  former 
management  of  Aerogen  Ireland,  a  wholly-owned  subsidiary  of  Aerogen,  Inc.  During  the  year  ended  December  31,  2006,  we 
determined that the non-binding letter of intent to sell the general purpose nebulizer device business, the anticipated proceeds of such 
potential sale, and the historical losses of the general purposes nebulizer device business were indicators that this intangible asset did 
not have future value and, as a result, we recorded a $5.5 million impairment charge. 

Note 14—Workforce Reduction Plans  

In an effort to reduce ongoing operating costs and improve our organizational structure, efficiency and productivity, we executed 
workforce reduction plans in May 2007 (2007 Plan) and February 2008 (2008 Plan) designed to streamline the company, consolidate 
corporate functions, and strengthen decision-making and execution within our business units. 

The 2007 Plan reduced our workforce by approximately 180 full-time employees, or approximately 25 percent of our regular full-
time employees. The 2008 Plan reduced our workforce by approximately 110 employees, or approximately 20 percent of our regular 
full-time employees. The 2007 Plan and the 2008 Plan cost approximately $8.4 million and $5.0 million, respectively, comprised of 
cash payments for severance, medical insurance, and outplacement services. Both plans were substantially complete at December 31, 
2008. 

For  the  years  ended  December  31,  2008  and  2007,  workforce  reduction  charges  were  recorded  in  our  Consolidated  Financial 

Statements as follows (in thousands): 

Cost of goods sold, net of inventory change 
Other cost of revenue 
Research and development expense 
General and administrative expense 

Total workforce reduction charges 

Years ended December 31,

2008

  $ 

148
1,221
3,087
517
  $  4,973

2007

$

974
—
5,791
1,617
$ 8,382

The following table summarizes the liabilities associated with the 2007 Plan and the 2008 Plan included in Accrued compensation 
in  our  Consolidated  Balance  Sheets  as  of  December  31,  2008  and  December  31,  2007,  and  the  activity  during  the  year  ended 
December 31, 2008 (in thousands): 

Balance at December 31, 2007 

Charges 
Payments 

Balance at December 31, 2008 

80 

 $

  2007 Plan      2008 Plan
  $  580 
— 
(580) 
  $  — 

4,973
(4,868)

 $

105 $

— $

Total

580
4,973
(5,448)
105

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
  
 
 
   
  
 
Note 15—Stock-Based Compensation  

We issue stock-based awards from three equity incentive plans, which are more fully described in Note 9 Stockholder’s Equity. 

Stock-based compensation cost is recorded in the following line items of our Consolidated Financial Statements: 

Cost of goods sold, net of change in inventory 
Research and development 
General and administrative 
Total compensation cost for share-based arrangements

 $ 

2008 

269  $

Years ended December 31,
2007
1,003 $
6,275
5,915

2006
1,614
9,692
4,642 
   4,960 
17,837
 $  9,871  $ 13,193 $ 29,143

For the years ended December 31, 2008, 2007, and 2006, we recorded approximately $2.2 million, $0.5 million, and $11.8 million, 
respectively,  of  stock-based  compensation  expense  related  to  modifications  of  certain  stock  grants  in  connection  with  employment 
separation  agreements.  Generally,  the  modifications  extended  the  option  holder’s  exercise  period  beyond  the  90  day  period  after 
termination and accelerated a portion of the option holder’s unvested grants. Stock-based compensation charges are non-cash charges 
and as such have no impact on our financial position or reported cash flows. 

Aggregate Unrecognized Stock-based Compensation Expense 

As of December 31, 2008, total unrecognized compensation expense related to unvested stock-based compensation arrangements 

under the Options Plans is expected to be recognized over a weighted-average period of 1.98 years as follows (in thousands): 

Fiscal Year 
2009 
2010 
2011 
2012 and thereafter 

Black-Scholes Assumptions 

$

As of
  December 31, 
2008
8,080
6,845
5,662
966
$ 21,553

The  following  tables  list  the  Black-Scholes  assumptions  used  to  calculate  the  fair  value  of  employee  stock  options  and  ESPP 

purchases. 

Average risk-free interest 
rate 
Dividend yield 
Volatility factor 
Weighted average expected 
life 

Year ended December 31, 2008 Year ended December 31, 2007  Year ended December 31, 2006

Employee 
Stock Options 

ESPP

Employee
Stock Options

ESPP

Employee
Stock Options

ESPP

2.5%   
0.0%   
51.58%   

2.00%
0.0%
72.34%

4.2%
0.0%
53.3%

4.8%   
0.0%   
38.4%   

4.8%
0.0%
63.1%

5.2%
0.0%
33.3%

4.97 years   

0.5 years

5.09 years

0.5 years   

5.20 years

0.5 years

Generally the stock-based grants have expected terms ranging from 30 months to 61 months. For the period ended December 31, 
2008, the annual forfeiture rate for directors, employee options, and employee RSU awards was estimated to be 0%, 11%, and 25% 
respectively.  For  the  twelve  months  ended  December  31,  2007  and  2006,  the  annual  forfeiture  rate  for  executives  and  staff  was 
estimated to be 4.7% and 7.4%, respectively, based on our qualitative and quantitative analysis of our historical forfeitures. 

The grant date fair value of RSU awards is always equal to the intrinsic value of the award on the date of grant since the awards 
were issued for no consideration. The weighted average life of the 2008, 2007, and 2006 RSU awards is estimated to be 0.8 years, 1.2 
years, and 3.0 years, respectively. 

81 

 
 
 
 
  
 
  
 
 
 
 
 
 
 
  
  
 
 
 
 
  
  
  
 
 
 
 
 
 
 
Summary of Stock Option Activity 

The table below presents a summary of stock option activity under the 2000 Equity Incentive Plan, the Non-Employee Directors’ 

Stock Option Plan, and the 2000 Non-Officer Equity Incentive Plan (in thousands, except for price per share information): 

Balance at December 31, 2005 

Options granted 
Options exercised 
Options forfeited & canceled 
Balance at December 31, 2006 

Options granted 
Options exercised 
Options forfeited & canceled 
Balance at December 31, 2007 

Options granted 
Options exercised 
Options forfeited & canceled 
Balance at December 31, 2008 
Exercisable at December 31, 2008 
Exercisable at December 31, 2007 
Exercisable at December 31, 2006 
____________ 

Options Outstanding

Exercise Price
Per Share

$

$

$

$

0.01–61.63
14.36–21.51
0.05–20.41
4.62–52.16
0.01–61.63
5.98–15.24
0.01–14.25
4.50–55.19
0.01–61.63
2.83–7.13
0.03–7.33
0.01–61.63
0.01–60.88

Number of
Shares
13,253
1,115
(2,160)
 (1,501)
10,707
5,257
(429)
 (3,323)
12,212
6,180
(39)
 (4,802)
 13,551
7,144
7,023
8,185

Weighted-
Average 
Exercise
Price
Per Share

$ 17.85 
17.88 
9.51 
21.86 
$ 18.97 
9.87 
6.80 
18.47 
$ 15.62 
6.02 
5.72 
12.93 
$ 12.13 
$ 16.57 
$ 19.15 
$ 19.88 

Weighted-
Average 
Remaining
  Contractual
  Life (in years)

5.38

Aggregate
Intrinsic
Value (1)
$ 37,678

$ 18,651

4.78

$ 15,348

$

$

$

1,770

643

42

2,032
$
276
$
584
$
$ 12,229

5.20

4.84
2.89
3.64
4.09

(1)  Aggregate Intrinsic Value represents the difference between the exercise price of the option and the closing market price of our

common stock on the exercise date or December 31, as applicable.

The weighted-average grant-date  fair value  of options  granted during  the  years  ended December  31, 2008, 2007,  and  2006  was 
$2.79, $5.11, and $10.54,  respectively.  The  estimated  fair  value of  options  that  vested  during  the  years  ended December  31,  2008, 
2007, and 2006 was $9.8 million, $8.7 million, and $12.0 million, respectively. 

The following table provides information regarding our outstanding stock options as of December 31, 2008 (in thousands except 

for price per share information and contractual life): 

Range of 
Exercise 
Prices 
$0.01 – $4.83 
$4.90 – $6.46 
$6.50 – $6.65 
$6.66 – $7.58 
$7.63 – $11.86 
$12.30 – $14.52 
$14.53 – $19.29 
$19.40 – $27.88 
$27.96 – $60.88 

  Number of Shares 

1,505
1,376
2,590
1,463
1,423
1,626
1,373
1,864
331
 13,551

Options Outstanding

  Weighted-Average
  Exercise Price Per 

Share
$  4.34
$  5.99
$  6.65
$  7.01
$  9.86
$  13.97
$  17.55
$  26.16
$  37.91
$  12.13

Weighted-Average
  Remaining Contractual 
Life (in years)
7.40
6.24
5.99
5.99
4.64
3.74
3.47
1.99
1.12
4.84

Options Exercisable

Number of Shares 

  Weighted-Average
  Exercise Price Per 
Share

38 
521 
499 
568 
970 
1,162 
1,216 
1,839 
  331 
 7,144 

0.20
$
5.97
$
6.65
$
7.04
$
$
9.88
$ 13.90
$ 17.62
$ 26.24
$ 37.91
$ 16.57

82 

 
 
 
 
  
  
  
  
  
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Summary of RSU Award Activity 

During 2008, we issued 47,900 RSU awards, respectively to certain officers on a time-based vesting schedule. Expense for these 
awards is recognized ratably over the underlying time-based vesting period and will settle by delivery of shares of our common stock 
on or shortly after the date the awards vest. The RSU awards become fully vested over a period of 12 months. We are expensing the 
grant date fair value of the awards ratably over the service period. 

During 2007, we issued 344,811 RSU awards, respectively to certain officers and employees on a time-based vesting schedule. 
Expense for these awards is recognized ratably over the underlying time-based vesting period and will settle by delivery of shares of 
our common stock on or shortly after the date the awards vest. The RSU awards become fully vested over a period of 12 to 48 months. 
We are expensing the grant date fair value of the awards ratably over the service period. 

During 2006, we issued RSU awards totaling 1,088,300 shares of our common stock to certain employees and directors. The RSU 
awards are settled by delivery of shares of our common stock on or shortly after the date the awards vest. A significant portion of 
these awards vest based upon achieving three pre-determined performance milestones which were initially expected to occur over a 
period of 40 months. We are expensing the grant date fair value of the awards ratably over the expected performance period. 

One of the three milestones was achieved during the three-month period ended June 30, 2007 and approximately 174,000 shares 
were  vested  and  released.  During  2007,  we  determined  that  the  second  milestone  would  not  be  met.  As  a  result,  we  reversed  all 
previously recorded compensation expense related to this performance milestone, approximately $2.8 million, in the third quarter of 
2007. Based on our current drug candidate development efforts, we currently estimate that the achievement of the third performance 
milestone is probable by the third quarter in 2011. If our actual experience in future periods differs from these current estimates, we 
may change our determination of the probability of achieving the performance milestone or the estimate of the period in which the 
milestone will be achieved. 

A summary of RSU award activity is as follows (in thousands):  

Balance at December 31, 2005 

Granted 
Released 
Forfeited & Canceled 

Balance at December 31, 2006 

Granted 
Released 
Forfeited & Canceled 

Balance at December 31, 2007 

Granted 
Released 
Forfeited & Canceled 

Balance at December 31, 2008 
____________ 

Weighted-Average 
Remaining 
contractual Life 
(in years)
1.14

1.52

2.03

2.48

  Weighted-Average 
Grant-Date 
Fair value(1)

  Aggregate 
  Intrinsic 
Value

$  19.55

$  11.01

$  5.26

$

$

4,676

3,184

$ 16,479

$

$

$

$

3,808

4,925

487

1,472

Units Issued
284
1,088
(178)
(110)
1,084
345
(334)
(360)
735
48
(107)
(411)
265

(1)  Fair value represents the difference between the exercise price of the award and the closing market price of our common stock on

the release date or the year ended December 31, 2008 as applicable.

83 

 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Note 16—Income Taxes  

For financial reporting purposes, “Loss before provision for income taxes,” includes the following components (in thousands): 

Domestic 
Foreign 
Total 

2008 

Years ended December 31,
2007
$ (69,350)   $  (30,143) $ (147,059)
(6,874)
$ (35,142)   $  (31,452) $ (153,933)

34,208 

(1,309)

2006

As  of  December  31,  2008,  we  had  a  net  operating  loss  carryforward  for  federal  income  tax  purposes  of  approximately  $720.6 
million, portions of which will begin to expire in 2009. We had a total state net operating loss carryforward of approximately $423.1 
million, which will begin to expire in 2010. Due to the discontinuation of our Bradford, UK operations, we no longer have a foreign 
net operating loss carryforward available as of December 31, 2008. 

Utilization of the federal and state net operating loss and credit carryforwards may be subject to a substantial annual limitation due 
to the “change in ownership” provisions of the Internal Revenue Code of 1986 and similar state provisions. The annual limitation may 
result in the expiration of net operating losses and credits before utilization. 

The provision (benefit) for income taxes consists of the following (in thousands): 

Years ended December 31,
2007

2008 

2006

Current: 

Federal 
State 
Foreign 
Total Current 
Deferred: 
Federal 
State 
Foreign 
Total Deferred 
Provision (Benefit) for income taxes 

  $  (970)  $

(69) 
519 
(520) 

194
782
333
1,309

— 
— 
(286) 
(286) 

—
—
—
—
  $  (806)  $ 1,309

$ —
6
—
6

—
822
—
822
$ 828

Income  tax  provision  (benefit)  related  to  continuing  operations  differs  from  the  amounts  computed  by  applying  the  statutory 

income tax rate of 35% to pretax loss as follows (in thousands): 

Years ended December 31,
2007

2008 

2006

U.S. federal provision (benefit)  

At statutory rate 
State taxes 
Change in valuation allowance 
Foreign tax differential 
Foreign subsidiary investment 
Unrecognized tax credits 
Capital lease true-up 
Expiring tax attributes 
Non-deductible employee compensation 
Sale of Irish subsidiary 

Investment impairment and non-deductible amortization

Other 

Total 

84 

(69)   

$  (12,300)   $  (10,998) $ (52,337)
6
50,385
—
—
—
—
—
2,138
—
636
—
828

782
27,829
—
—
(13,109)
—
—
210
(3,604)
—
199
1,309 $

29,768 
(11,754)   
(4,777)   
(2,366)   
(1,431)   
1,508 
14 
— 
— 
601 
(806)   $ 

$ 

 
 
 
 
  
  
   
  
 
 
 
 
  
 
  
 
 
 
 
 
   
   
 
 
 
 
   
   
 
 
  
  
   
 
 
 
 
 
  
 
Deferred income taxes reflect the net tax effects of loss and credit carryforwards and temporary differences between the carrying 
amounts  of  assets  and  liabilities  for  financial  reporting  purposes  and  the  amounts  used  for  income  tax  purposes.  Significant 
components of our deferred tax assets for federal and state income taxes are as follows (in thousands): 

Deferred tax assets: 

Net operating loss carryforwards 
Research and other credits 
Capitalized research expenses 
Deferred revenue 
Depreciation 
Reserve and accruals 
Stock based compensation 
Capital loss carryforward 
Other 

Deferred tax assets before valuation allowance 
Valuation allowance for deferred tax assets 

Total deferred tax assets 
Deferred tax liabilities: 

Depreciation 
Acquisition related intangibles 
Other 

Total deferred tax liabilities 
Net deferred tax assets 

December 31,

2008

2007

$  289,631 $
50,350
4,563
28,659
—
9,629
20,315
—
5,163
408,310
(402,907)

$ 

5,403 $

254,419
47,274
6,670
11,050
7,423
24,495
16,375
3,918
6,170
377,794
(375,318)
2,476

(1,479)
(3,352)
(286)
(5,117) $
286 $

—
(2,476)
—
(2,476)
—

$ 
$ 

Realization  of our  deferred  tax  assets  is  dependent  upon future  earnings,  if  any,  the  timing  and  amount of  which  are  uncertain. 
Because of  our  lack  of U.S. earnings  history,  the net U.S.  deferred  tax  assets  have been fully  offset by  a valuation  allowance.  The 
valuation allowance increased by $27.6 million and $52.8 million during the years ended December 31, 2008 and 2007, respectively. 
The valuation allowance includes approximately $35.6 million of benefit as of December 31, 2008 and December 31, 2007 related to 
stock based compensation and exercises, prior to the implementation of SFAS No. 123R, that will be credited to additional paid in 
capital when realized. We have federal research credits of approximately $20.8 million, which will begin to expire in 2009 and state 
research credits of approximately $16.8 million which have no expiration date. We have federal orphan drug credits of $12.8 million 
which will expire in 2024. 

Undistributed earnings of our foreign subsidiary in India are considered to be permanently reinvested and accordingly, no deferred 
U.S. income taxes have been provided thereon. Upon distribution of those earnings in the form of dividends or otherwise, we would 
be subject to U.S. income tax. 

In  July  2006,  the  FASB  issued  Interpretation  No.  48,  Accounting  for  Uncertainty  in  Income  Taxes.  This  interpretation,  among 
other things, creates a two-step approach for evaluating uncertain tax positions. Recognition occurs when an enterprise concludes that 
a tax position, based on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement determines the 
amount of benefit that more-likely-than-not will be realized. De-recognition of a tax position that was previously recognized would 
occur  when  a  company  subsequently  determines  that  a  tax  position  no  longer  meets  the  more-likely-than-not  threshold  of  being 
sustained. FIN 48 specifically prohibits the use of a valuation allowance as a substitute for de-recognition of tax positions, and it has 
expanded disclosure requirements. 

As  of  December  31,  2008  and  December  31,  2007,  we  had  $11.7  million  and  $9.2  million,  respectively,  of  unrecognized  tax 
benefits. We  historically  accrued for uncertain  tax  positions  in deferred tax  assets  as we  have been in  a  net  operating  loss  position 
since inception and any adjustments to our tax positions would result in an adjustment  of our net operating loss or tax credit  carry 
forwards rather than resulting in a cash outlay. If we are eventually able to recognize these uncertain positions, our effective tax rate 
would be reduced. We currently have a full valuation allowance against our net deferred tax asset which would impact the timing of 
the effective tax rate benefit should any of these uncertain tax positions be favorably settled in the future. 

It is reasonably possible that certain unrecognized tax benefits may increase or decrease within the next twelve months due to tax 
examination  changes,  settlement  activities,  expirations  of  statute  of  limitations,  or  the  impact  on  recognition  and  measurement 
considerations related to the results of published tax cases or other similar activities. We do not anticipate any significant changes to 
unrecognized tax benefits over the next 12 months. 

85 

 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our  policy  is  to  include  interest  and  penalties  related  to  unrecognized  tax  benefits,  if  any,  within  the  provision  for  taxes  in  the 
consolidated  condensed  statements  of  operations  under  the  provisions  of  FIN  48.  During  the  years  ended  December  31,  2008  and 
2007, no interest or penalties were required to be recognized relating to unrecognized tax benefits. 

We file income tax returns in the U.S., as well as California, Alabama, and various foreign jurisdictions. We are currently not the 
subject of any income tax examinations. In general, the earliest open year subject to examination is 2005 for U.S. and Alabama and 
2004 for California, although depending upon jurisdiction, tax years may remain open subject to limitations. We have evaluated the 
need for additional tax reserves for any audits as part of our FIN 48 adoption process. 

We have the following activity relating to unrecognized tax benefits (in thousands): 

Beginning balance 

Tax positions related to current year  

Additions 
Reductions 

Tax positions related to prior year 

Additions 
Reductions 

Settlements 
Lapses in statute of limitations 

Ending balance 

Note 17—Segment Reporting  

December 31,
2008
9,222 $ 7,176

2007

$

2,438
—

2,046
—

—
—
—
—
—
—
—
—
$ 11,660 $ 9,222

We  operate  in  one  business  segment  which  focuses  on  applying  our  technology  platforms  to  improve  the  performance  of 
established  and  novel  medicines.  We  operate  in  one  segment  because  our  business  offerings  have  similar  economics  and  other 
characteristics,  including  the  nature  of  products  and  production  processes,  types  of  customers,  distribution  methods  and  regulatory 
environment. We are comprehensively managed as one business segment by our Chief Executive Officer and his management team. 
Within our one business segment we have two components, PEGylation technology and pulmonary technology. 

Our revenue is derived primarily from clients in the pharmaceutical and biotechnology industries. Four of our customers, Bayer 
(including Bayer Healthcare LLC and Bayer Schering Pharma AG), UCB Pharma, Novartis, and Roche represented 24%, 16%, 15%, 
and 14%, respectively,  of our  total  revenue  during  the  year  ended  December  31, 2008.  Due  to  the  termination  of our  collaborative 
agreements  with  Pfizer,  we  did  not  receive  any  revenue  from  Pfizer  in  2008  related  to  Exubera  or  NGI.  Revenue  from  Pfizer  Inc. 
represented 69% and 64% of our revenue for the years ended December 31, 2007 and 2006, respectively. 

Revenue  by  geographic  area  is  based  on  the  shipping  locations  of  the  customers.  The  following  table  sets  forth  revenue  by 

geographic area (in thousands): 

United States 
European countries 
All other countries 
Total Revenue 

2008 

Years ended December 31,
2007
$  30,800   $  212,990 $ 182,959
33,471
  59,385   
1,288
—    
$  90,185   $  273,027 $ 217,718

60,037
—

2006

At December 31, 2008, $69.2 million, or approximately 94%, of the net book value of our property and equipment was located in 
the United States and $4.4 million, or approximately 6%, was located in India. At December 31, 2007, approximately 98% of the net 
book value of our property and equipment of $114.4 million was located in the United States. 

86 

 
 
 
 
 
 
  
  
 
 
 
 
 
  
 
  
 
   
 
 
 
Note 18—Selected Quarterly Financial Data (Unaudited)  

The following table sets forth certain unaudited quarterly financial data. In our opinion, the unaudited information set forth below 
has been prepared on the same basis as the audited information and includes all adjustments necessary to present fairly the information 
set forth herein. We have experienced fluctuations in our quarterly results. We expect these fluctuations to continue in the future. Due 
to  these  and  other  factors,  we  believe  that  quarter-to-quarter  comparisons  of  our  operating  results  will  not  be  meaningful,  and  you 
should not rely on our results for one quarter as an indication of our future performance. Certain items previously reported in specific 
financial  statement  captions  have  been  reclassified  to  conform  to  the  current  period  presentation.  Such  reclassifications  have  not 
impacted previously reported revenues, operating loss or net loss. All data is in thousands except per share information. 

Product sales and royalty 

revenue (1) 

Collaboration and other 

revenue 

Gross margin on product sales 
Research and development 

Q1 

Fiscal Year 2008
Q3
Q2

Q4

Q1

Fiscal Year 2007
Q3
Q2 

Q4

 $  10,371 

 $ 

9,010 $

9,474 $

12,400 $

71,355 $  47,001 

 $  35,697 $

26,702

 $ 
 $ 

9,621 
3,144 

 $  11,392 $
3,566 $
 $ 

11,965 $
4,125 $

15,952 $
2,204 $

13,661 $  18,916 
8,626 
15,727 $ 

 $  20,624 $
9,391 $
 $ 

39,071
9,315

expenses 

 $  37,373 

 $  33,500 $

38,265 $

45,279 $

37,492 $  41,000 

 $  35,773 $

39,310

General and administrative 

expenses (2) 

Impairment of long lived assets 
Gain on sale of pulmonary 

 $  11,947 
— 
 $ 

 $  13,329 $
— $
 $ 

12,386 $
— $

13,835 $
1,458 $

16,971 $  13,415 
— 

— $ 

 $  12,663 $
— $
 $ 

14,233
28,396

assets 

 $ 

— 

 $ 

— $

— $ (69,572) $

— $ 

— 

 $ 

— $

—

Gain on termination of 

collaborative agreements, net 

Operating income (loss) 
Interest expense 
Gain on extinguishment of 

debt 

Net income (loss) 
Basic and diluted net income 

(loss) per share (3)(4) 
____________ 

 $ 

— 

 $ 
— $
 $  (41,889)   $  (33,358) $ (34,561) $
3,988 $
 $ 

3,929 $

3,918 

— $

 $ 

— $

— $ 

— 

 $ 

27,156 $ (25,969) $  (27,988)   $  (19,572) $
4,773 $

4,933 $ 

3,357 $

4,702 

 $ 

— $ (79,178)
37,381
4,230

 $ 
— $
 $  (40,705)   $  (33,375) $ (37,038) $

— $

— 

 $ 

— $
50,149 $
76,782 $ (25,673) $  (27,510)   $  (18,620) $

— $ 

— 

 $ 

—
39,042

 $ 

(0.44)   $ 

(0.36) $

(0.40) $

0.83

$

(0.28) $ 

(0.30)   $ 

(0.20) $

0.42

(1)  Exubera  commercialization  readiness  revenue was reclassified from Product sales and royalties  to  Collaboration and other

revenue. 

(2)  Amortization  of  other  intangible  assets  was previously separately disclosed, but has been  combined with General and

administrative expenses for the years ended December 31, 2008, 2007, and 2006.

(3)  Quarterly loss per share amounts may not total the year-to-date loss per share due to rounding. 

(4)  During the fourth quarter of 2008 and 2007, there were approximately 81 dilutive shares and 578 dilutive shares, respectively,

outstanding which did not change earnings per share.

87 

 
 
 
 
 
 
  
 
   
   
 
 
 
 
 
 
 
NEKTAR THERAPEUTICS 

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES 

YEARS ENDED DECEMBER 31, 2008, 2007, and 2006 

SCHEDULE II 

Description 

2008: 
Allowance for doubtful accounts 
Allowance for inventory reserves 
2007:  
Allowance for doubtful accounts 
Allowance for inventory reserves 
2006: 
Allowance for doubtful accounts 
Allowance for inventory reserves 

  Balance at 
  Beginning 
of Year

Charged to 
Costs and 
Expenses, 
Net of Reversals 

  Utilizations

  Balance At 
End 
of Year

(In thousands) 

$
33
$ 5,772

$
357
$ 4,160

$
70
$ 3,068

$
61 
$ 2,668 

  $ 
(2)
  $  (3,451)

$
92
$ 4,989

$
(16) 
$ 4,670 

  $ 
(308)
  $  (3,058)

$
33
$ 5,772

$
380 
$ 2,592 

  $ 
(93)
  $  (1,500)

$
357
$ 4,160

88 

 
 
 
 
 
 
 
  
  
 
 
 
  
  
  
 
 
 
 
 
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure. 

Not applicable.  

Item 9A. Controls and Procedures  

Disclosure Controls and Procedures 

We  maintain  disclosure  controls  and  procedures  that  are  designed  to  ensure  that  information  required  to  be  disclosed  in  our 
Securities Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules 
and forms, and that such information is accumulated and communicated to management, including our Chief Executive Officer and 
Chief Financial Officer, as appropriate, to allow timely decisions regarding required financial disclosure. 

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of 
our  management,  including  the  Chief  Executive  Officer  and  the  Chief  Financial  Officer,  of  the  effectiveness  of  the  design  and 
operation of our disclosure controls and procedures pursuant to Exchange Act Rule 13a-15. Based upon, and as of the date of, this 
evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that our disclosure controls and procedures were 
effective. Accordingly, management believes that the financial statements included in this report fairly present in all material respects 
our financial condition, results of operations and cashflows for the periods presented. 

Management’s Annual Report on Internal Control over Financial Reporting  

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is 
defined  in  Exchange  Act  Rule  13a-15(f).  Our  internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable 
assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in 
accordance with GAAP. 

Our  management  has  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,  2008.  In 
making  its  assessment  of  internal  control  over  financial  reporting,  management  used  the  criteria  described  in  Internal  Control—
Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. 

Based on our evaluation under the framework described in Internal Control—Integrated Framework, our management concluded 

that our internal control over financial reporting was effective as of December 31, 2008. 

The  effectiveness  of  our  internal  control  over  financial  reporting  as  of December  31,  2008  has  been  audited  by  an  independent 

registered public accounting firm, as stated in their report, which is included herein. 

89 

 
 
 
 
 
 
 
 
 
 
 
 
 
Changes in Internal Control Over Financial Reporting 

We continuously seek to improve the efficiency and effectiveness of our internal controls. This results in refinements to processes 
throughout  the  Company.  In  October  2008,  we  completed  the  implementation  of  an  upgraded  enterprise  resource  planning  (ERP) 
system  designed  and  implemented  to  make  our  financial  reporting  more  efficient  and  integrated  across  our  enterprise.  The 
implementation of the ERP system did not result in changes to our controls over financial reporting. As a result, there was no change 
in our internal control over financial reporting during the quarter ended December 31, 2008, which was identified in connection with 
our management’s evaluation required by Exchange Act Rules 13a-15(f) and 15d-15(f) that has materially affected, or is reasonably 
likely to materially affect, our internal control over financial reporting. 

Inherent Limitations on the Effectiveness of Controls 

Our management, including the Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls 
and procedures or our internal control over financial reporting will prevent all error and all fraud. A control system, no matter how 
well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. 
Because  of  the  inherent  limitations  in  all  control  systems,  no  evaluation  of  controls  can  provide  absolute  assurance  that  all  control 
issues  and  instances  of  fraud,  if  any,  within  the  company  have  been  detected.  These  inherent  limitations  include  the  realities  that 
judgments in decision making can be faulty and that breakdowns can occur because of simple error or mistake. Additionally, controls 
can be circumvented by the individual acts of some persons, by collusion of two or more people or by management override of the 
control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and 
there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, 
controls may become inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may 
deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and 
not be detected. 

Item 9B. Other Information  

None.  

90 

 
 
 
 
 
 
 
 
Item 10. Directors, Executive Officers and Corporate Governance 

PART III 

Information relating to our executive officers required by this item is set forth in Part I—Item 1 of this report under the caption 
“Executive  Officers  of  the  Registrant”  and  is  incorporated  herein  by  reference.  The  other  information  required  by  this  Item  is 
incorporated by reference from the definitive proxy statement for our 2009 Annual Meeting of Stockholders to be filed with the SEC 
pursuant to Regulation 14A (Proxy Statement) not later than 120 days after the end of the fiscal year covered by this Form 10-K under 
the  captions  “Corporate  Governance  and  Board  of  Directors,”  “Proposal  1—Election  of  Directors”  and  “Section  16(a)  Beneficial 
Ownership Reporting Compliance.” 

Information  regarding  our  audit  committee  financial  expert  will  be  set  forth  in  the  Proxy  Statement  under  the  caption  “Audit 

Committee,” which information is incorporated herein by reference. 

In  December  2003,  we  adopted  a  Code  of  Business  Conduct  and  Ethics  applicable  to  all  employees,  including  the  principal 
executive  officer,  principal  financial  officer  and  principal  accounting  officer  or  controller,  or  persons  performing  similar  functions. 
The Code of Business Conduct and Ethics is posted on our website at www.nektar.com. Amendments to, and waivers from, the Code 
of  Business  Conduct  and  Ethics  that  apply  to  any  of  these  officers,  or  persons  performing  similar  functions,  and  that  relate  to  any 
element of the code of ethics definition enumerated in Item 406(b) of Regulation S-K will be disclosed at the website address provided 
above and, to the extent required by applicable regulations, on a current report on Form 8-K. 

As  permitted  by  SEC  Rule  10b5-1,  certain  of  our  executive  officers,  directors  and  other  employees  have  set  up  a  predefined, 
structured stock trading program with their broker to sell our stock. The stock trading program allows a broker acting on behalf of the 
executive officer, director or other employee to trade our stock during blackout periods or while such executive officer, director or 
other  employee  may  be  aware  of  material,  nonpublic  information,  if  the  trade  is  performed  according  to  a  pre-existing  contract, 
instruction  or  plan  that  was  established  with  the  broker  during  a  non-blackout  period  and  when  such  executive  officer,  director  or 
employee was not aware of any material, nonpublic information. Our executive officers, directors and other employees may also trade 
our stock outside of the stock trading programs set up under Rule 10b5-1 subject to our blackout periods and insider trading rules. 

Item 11. Executive Compensation 

The information required by this Item is included in the Proxy Statement and incorporated herein by reference. 

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 

The information required by this Item is included in the Proxy Statement and incorporated herein by reference. 

Item 13. Certain Relationships and Related Transactions and Director Independence 

The information required by this Item is included in the Proxy Statement and incorporated herein by reference. 

Item 14. Principal Accountant Fees and Services 

The information required by this Item is included in the Proxy Statement and incorporated herein by reference. 

91 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PART IV 

Item 15. Exhibits, Financial Statement Schedules 

(a)  The following documents are filed as part of this report:  

(1)  Consolidated Financial Statements:  

The following financial statements are filed as part of this report under Item 8 “Financial Statements and Supplementary Data.” 

Reports of Independent Registered Public Accounting Firm
Consolidated Balance Sheets at December 31, 2008 and 2007
Consolidated Statements of Operations for each of the three years in the period ended December 31, 2008 
Consolidated Statements of Stockholders’ Equity for each of the three years in the period ended December 31, 2008
Consolidated Statements of Cash Flows for each of the three years in the period ended December 31, 2008 
Notes to Consolidated Financial Statements 

Page
55
57
58
59
60
61

(2)  Financial Statement Schedules:  

Schedule  II,  Valuation  and  Qualifying  Accounts  and  Reserves,  is  filed  as  part  of  this  Annual  Report  on  Form  10-K.  All  other 
financial  statement  schedules  have  been  omitted  because  they  are  not  applicable,  or  the  information  required  is  presented  in  our 
consolidated financial statements and notes thereto under Item 8 of this Annual Report on Form 10-K. 

(3)  Exhibits.  

Except as so indicated in Exhibit 32.1, the following exhibits are filed as part of, or incorporated by reference into, this Annual 

Report on Form 10-K. 

Exhibit 
  Number  

Description of Documents 

2.1 

3.1 

3.2 

3.3 

3.4 

3.5 

3.6 

4.1 

4.2 

4.3 

4.4 

4.5 

(23)  Asset  Purchase  Agreement,  dated  October  20,  2008,  by  and  between  Nektar  Therapeutics,  a  Delaware
corporation,  AeroGen,  Inc.,  a  Delaware  corporation  and  wholly-owned  subsidiary  of  Nektar  Therapeutics,
Novartis Pharmaceuticals Corporation, a Delaware corporation, and Novartis Pharma AG, a Swiss corporation+

(1)  Certificate of Incorporation of Inhale Therapeutic Systems (Delaware), Inc.

(2)  Certificate of Amendment of the Amended Certificate of Incorporation of Inhale Therapeutic Systems, Inc.

(3)  Certificate of Designation of Series A Junior Participating Preferred Stock of Nektar Therapeutics

(4)  Certificate of Designation of Series B Convertible Preferred Stock of Nektar Therapeutics 

(5)  Certificate of Ownership and Merger of Nektar Therapeutics

(6)  Amended and Restated Bylaws of Nektar Therapeutics

Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4, 3.5 and 3.6

(5) 

Specimen Common Stock certificate

(3)  Rights Agreement, dated as of June 1, 2001, by and between Nektar Therapeutics and Mellon Investor Services 

LLC, as Rights Agent 

(3) 

Form of Right Certificate 

(7) 

Indenture,  dated  September  28,  2005,  by  and  between  Nektar  Therapeutics,  as  Issuer,  and  J.P.  Morgan  Trust 
Company, National Association, as Trustee

92 

 
 
 
 
 
 
 
  
 
 
 
 
 
  
  
 
 
4.6 

(7)  Registration Right Agreement, dated as of September 28, 2005, among Nektar Therapeutics and entities named 

therein 

10.1 

10.2 

10.3 

10.4 

10.5 

(8) 

1994 Non-Employee Directors’ Stock Option Plan, as amended++

(9) 

1994 Employee Stock Purchase Plan, as amended and restated++

(10)  2000 Non-Officer Equity Incentive Plan, as amended and restated++

(11)  Form of 2000 Non-Officer Equity Incentive Plan Stock Option Agreement (Nonstatutory Stock Option)++

(11)  Form  of  2000  Non-Officer  Equity  Incentive  Plan  Stock  Option  Agreement  (Nonstatutory  (Unapproved)  Stock 

Option)++ 

10.6 

(12)  Forms of 2000 Non-Officer Equity Incentive Plan Restricted Stock Unit Grant Notice and Restricted Stock Unit 

Agreement++ 

10.7 

10.8 

10.9 

(13)  2000 Equity Incentive Plan, as amended and restated++

(14)  Form of Stock Option Agreement under the 2000 Equity Incentive Plan++

(12)  Forms  of  Restricted  Stock  Unit  Grant  Notice  and  Restricted  Stock  Unit  Agreement  under  the  2000  Equity 

Incentive Plan++ 

10.10 

(15)  Form of Non-Employee Director Stock Option Agreement under the 2000 Equity Incentive Plan++

10.11 

(15)  Form of Non-Employee Director Restricted Stock Unit Agreement under the 2000 Equity Incentive Plan++

10.12 

(15)  Employment Transition and Separation Release Agreement, executed effective on September 4, 2007, with Louis 

Drapeau++ 

10.13 

(15)  Employment Transition and Separation Release Agreement, executed effective on October 5, 2007, with David 

Johnston++ 

10.14 

(22)  Compensation Plan for Non-Employee Directors, as amended and restated++ 

10.15 

(10)  401(k) Retirement Plan++ 

10.16 

(22)  2008 Discretionary Performance-Based Incentive Compensation Policy++

10.17 

(23)  Amended and Restated Change of Control Severance Benefit Plan++

10.18 

(17)  Transition and Retirement Agreement, dated March 13, 2006, with Ajit S. Gill++ 

10.19 

(18)  Letter  Amendment,  dated  October  5,  2006,  with  Ajit  S.  Gill,  amending  that  certain  Transition  and  Retirement 

Agreement, dated March 13, 2006, with Mr. Gill++

10.20 

(23)  2008 Equity Incentive Plan++ 

10.21 

(23)  Forms of Stock Option Grant Notice and of Stock Option Agreement under the 2008 Equity Incentive Plan++

10.22 

(23)  Forms  of  Restricted  Stock  Unit  Grant  Notice  and  Restricted  Stock  Unit  Agreement  under  the  2008  Equity 

Incentive Plan++ 

10.23 

(19)  Separation and General Release Agreement, dated November 17, 2008, with John S. Patton++

10.24 

(20)  Bonus and General Release Agreement, dated December 27, 2008, with Nevan C. Elam++ 

10.25 

(15)  Form of Severance Letter for executive officers of the company++

10.26 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with Howard W. Robin++

93 

 
 
10.27 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with John Nicholson++

10.28 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with Bharatt M. Chowrira, 

Ph.D., J.D.++ 

10.29 

(23)  Amended  and  Restated  Letter  Agreement,  executed  effective  on  December  1,  2008,  with  Dr.  Randall 

Moreadith++ 

10.30 

(15)  Amended  and Restated  Built-to-Suite  Lease  between  Nektar  Therapeutics  and  BMR-201 Industrial  Road  LLC, 

dated August 17, 2004, as amended on January 11, 2005 and July 19, 2007

10.31 

(21)  Settlement Agreement and General Release, dated June 30, 2006, by and between The Board of Trustees of the 
University  of  Alabama,  The  University  of  Alabama  in  Huntsville,  Nektar  Therapeutics  AL  Corporation  (a 
wholly-owned subsidiary of Nektar Therapeutics), Nektar Therapeutics and J. Milton Harris 

10.32 

(15)  Co-Development,  License  and  Co-Promotion  Agreement,  dated  August  1,  2007,  between  Nektar  Therapeutics 

(and its subsidiaries) and Bayer Healthcare LLC+

10.33 

(16)  Termination Agreement and Mutual Release, dated November 9, 2007, between Nektar Therapeutics and Pfizer 

Inc.+ 

10.34 

(23)  Exclusive Research, Development, License and Manufacturing and Supply Agreement, by and among Nektar AL 

Corporation, Baxter Healthcare SA, and Baxter Healthcare Corporation, dated September 26, 2005, as amended+

10.35 

(23)  Exclusive License Agreement, dated December 31, 2008, between Nektar Therapeutics, a Delaware corporation, 

and Novartis Pharma AG, a Swiss corporation+

(23)  Subsidiaries of Nektar Therapeutics

(23)  Consent of Independent Registered Public Accounting Firm

Power of Attorney (reference is made to the signature page)

(23)  Certification of Nektar Therapeutics’ principal executive officer required by Rule 13a-14(a) or Rule 15d-14(a)

(23)  Certification of Nektar Therapeutics’ principal financial officer required by Rule 13a-14(a) or Rule 15d-14(a)

21.1 

23.1 

24 

31.1 

31.2 

32.1* 

(23)  Section 1350 Certifications 

____________ 

+   Confidential  treatment  with  respect  to  specific  portions  of  this  Exhibit  has  been  requested,  and  such  portions  are  omitted  and 

have been filed separately with the SEC. 

++  Management contract or compensatory plan or arrangement.

* 

Exhibit 32.1 is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act 
of 1934, as amended, or otherwise subject to the liability of that section, nor shall such exhibit be deemed to be incorporated by
reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Securities
Exchange Act, except as otherwise stated in such filing.

(1) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 1998. 

(2) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2000. 

(3) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on June 4, 2001.

(4) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on January 8, 2002.

94 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(5) 

Incorporated  by  reference  to  the  indicated  exhibit in  Nektar Therapeutics’ Current  Report  on  Form  8-K,  filed  on January  23, 
2003. 

(6) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on December 12, 
2007. 

(7) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on September 28, 
2005. 

(8) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 1996. 

(9) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Registration Statement on Form S-8 (No. 333-98321), 
filed on August 19, 2002. 

(10)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

June 30, 2004. 

(11)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Registration Statement on Form S-8 (No. 333-71936), 

filed on October 19, 2001, as amended. 

(12)  Incorporated  by  reference  to  the  indicated  exhibit  in  Nektar Therapeutics’  Annual  Report  on  Form  10-K,  as  amended,  for  the 

year ended December 31, 2005. 

(13)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on June 7, 2006. 

(14)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2000. 

(15)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2007. 

(16)  Incorporated  by  reference  to  the  indicated  exhibit  in  Nektar  Therapeutics’  Annual  Report  on  Form  10-K  for  the  year  ended 

December 31, 2007. 

(17)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K/A, filed on March 16, 

2006. 

(18)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2006. 

(19)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on November 21, 

2008. 

(20)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on January 2, 2009. 

(21)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

June 30, 2006. 

(22)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

March 31, 2008. 

(23)  Filed herewith.  

95 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant  to  the  Securities  Exchange  Act  of  1934,  the  Registrant  has  duly  caused  this  report  to  be  signed  on  its  behalf  by  the 

undersigned, thereunto duly authorized, in the City of San Carlos, County of San Mateo, State of California on March 6, 2009. 

SIGNATURES 

By:  /s/ JOHN NICHOLSON 
John Nicholson  
Senior Vice President and Chief Financial Officer 

By:  /s/ JILLIAN B. THOMSEN  
Jillian B. Thomsen  
Vice President and Chief Accounting Officer 

96 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
POWER OF ATTORNEY 

KNOW ALL PERSON BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints John 
Nicholson  and  Jillian  B.  Thomsen  and  each  of  them,  as  his  or  her true  and  lawful  attorneys-in-fact  and  agents,  with  full  power of 
substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all 
amendments to this Annual Report on Form 10-K and to file the same, with all exhibits thereto and other documents in connection 
therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents and each of them, full power 
and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all 
intents and purposes as he or she might or could do in person, hereby ratify and confirming all that said attorneys-in-fact and agents, 
or any of them, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof. 

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed by the following 

persons in the capacities and on the dates indicated: 

SIGNATURE 

TITLE

/s/ HOWARD W. ROBIN 
Howard W. Robin 

/s/ JOHN NICHOLSON
John Nicholson 

/s/ JILLIAN B, THOMSEN 
Jillian B. Thomsen 

/s/ ROBERT B. CHESS
Robert B. Chess 

/s/ MICHAEL A. BROWN 
Michael A. Brown 

/s/ HOYOUNG HUH 
Hoyoung Huh 

/s/ JOSEPH J. KRIVULKA 
Joseph J. Krivulka 

/s/ CHRISTOPHER A. KUEBLER 
Christopher A. Kuebler 

/s/ LUTZ LINGNAU 
Lutz Lingnau 

/s/ SUSAN WANG 
Susan Wang 

/s/ ROY A. WHITFIELD 
Roy A. Whitfield

Chief Executive Officer, President and Director 
(Principal Executive Officer)

Senior Vice President and Chief Financial 
Officer (Principal Financial Officer)

Vice President Finance and Chief Accounting 
Officer (Principal Accounting Officer)

DATE

March 6, 2009

March 6, 2009

March 6, 2009

Director, Chairman of the Board of Directors 

March 6, 2009

March 6, 2009

March 6, 2009

March 6, 2009

March 6, 2009

March 6, 2009

March 6, 2009

March 6, 2009

Director

Director

Director

Director

Director

Director

Director

97 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Except as so indicated in Exhibit 32.1, the following exhibits are filed as part of, or incorporated by reference into, this Annual 

Report on Form 10-K. 

Exhibit 
  Number  

Description of Documents 

2.1 

3.1 

3.2 

3.3 

3.4 

3.5 

3.6 

4.1 

4.2 

4.3 

4.4 

4.5 

(23)  Asset  Purchase  Agreement,  dated  October  20,  2008,  by  and  between  Nektar  Therapeutics,  a  Delaware 
corporation,  AeroGen,  Inc.,  a  Delaware  corporation  and  wholly-owned  subsidiary  of  Nektar  Therapeutics, 
Novartis Pharmaceuticals Corporation, a Delaware corporation, and Novartis Pharma AG, a Swiss corporation+

(1)  Certificate of Incorporation of Inhale Therapeutic Systems (Delaware), Inc.

(2)  Certificate of Amendment of the Amended Certificate of Incorporation of Inhale Therapeutic Systems, Inc.

(3)  Certificate of Designation of Series A Junior Participating Preferred Stock of Nektar Therapeutics

(4)  Certificate of Designation of Series B Convertible Preferred Stock of Nektar Therapeutics 

(5)  Certificate of Ownership and Merger of Nektar Therapeutics

(6)  Amended and Restated Bylaws of Nektar Therapeutics

Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4, 3.5 and 3.6

(5) 

Specimen Common Stock certificate

(3)  Rights Agreement, dated as of June 1, 2001, by and between Nektar Therapeutics and Mellon Investor Services 

LLC, as Rights Agent 

(3) 

Form of Right Certificate 

(7) 

Indenture,  dated  September  28,  2005,  by  and  between  Nektar  Therapeutics,  as  Issuer,  and  J.P.  Morgan  Trust 
Company, National Association, as Trustee

4.6 

(7)  Registration Right Agreement, dated as of September 28, 2005, among Nektar Therapeutics and entities named 

therein 

10.1 

10.2 

10.3 

10.4 

10.5 

(8) 

1994 Non-Employee Directors’ Stock Option Plan, as amended++

(9) 

1994 Employee Stock Purchase Plan, as amended and restated++

(10)  2000 Non-Officer Equity Incentive Plan, as amended and restated++

(11)  Form of 2000 Non-Officer Equity Incentive Plan Stock Option Agreement (Nonstatutory Stock Option)++

(11)  Form  of  2000  Non-Officer  Equity  Incentive  Plan  Stock  Option  Agreement  (Nonstatutory  (Unapproved)  Stock 

Option)++ 

10.6 

(12)  Forms of 2000 Non-Officer Equity Incentive Plan Restricted Stock Unit Grant Notice and Restricted Stock Unit 

Agreement++ 

10.7 

10.8 

10.9 

(13)  2000 Equity Incentive Plan, as amended and restated++

(14)  Form of Stock Option Agreement under the 2000 Equity Incentive Plan++

(12)  Forms  of  Restricted  Stock  Unit  Grant  Notice  and  Restricted  Stock  Unit  Agreement  under  the  2000  Equity 

Incentive Plan++ 

10.10 

(15)  Form of Non-Employee Director Stock Option Agreement under the 2000 Equity Incentive Plan++

10.11 

(15)  Form of Non-Employee Director Restricted Stock Unit Agreement under the 2000 Equity Incentive Plan++

98 

 
 
 
  
  
  
  
  
  
 
10.12 

(15)  Employment Transition and Separation Release Agreement, executed effective on September 4, 2007, with Louis 

Drapeau++ 

10.13 

(15)  Employment Transition and Separation Release Agreement, executed effective on October 5, 2007, with David 

Johnston++ 

10.14 

(22)  Compensation Plan for Non-Employee Directors, as amended and restated++ 

10.15 

(10)  401(k) Retirement Plan++ 

10.16 

(22)  2008 Discretionary Performance-Based Incentive Compensation Policy++

10.17 

(23)  Amended and Restated Change of Control Severance Benefit Plan++

10.18 

(17)  Transition and Retirement Agreement, dated March 13, 2006, with Ajit S. Gill++ 

10.19 

(18)  Letter  Amendment,  dated  October  5,  2006,  with  Ajit  S.  Gill,  amending  that  certain  Transition  and  Retirement 

Agreement, dated March 13, 2006, with Mr. Gill++

10.20 

(23)  2008 Equity Incentive Plan++ 

10.21 

(23)  Form of Stock Option Agreement under the 2008 Equity Incentive Plan++

10.22 

(23)  Forms  of  Restricted  Stock  Unit  Grant  Notice  and  Restricted  Stock  Unit  Agreement  under  the  2008  Equity 

Incentive Plan++ 

10.23 

(19)  Separation and General Release Agreement, dated November 17, 2008, with John S. Patton++

10.24 

(20)  Bonus and General Release Agreement, dated December 27, 2008, with Nevan C. Elam++ 

10.25 

(15)  Form of Severance Letter for executive officers of the company++

10.26 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with Howard W. Robin++

10.27 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with John Nicholson++

10.28 

(23)  Amended and Restated Letter Agreement, executed effective on December 1, 2008, with Bharatt M. Chowrira, 

Ph.D., J.D.++ 

10.29 

(23)  Amended  and  Restated  Letter  Agreement,  executed  effective  on  December  1,  2008,  with  Dr.  Randall 

Moreadith++ 

10.30 

(15)  Amended  and Restated  Built-to-Suite  Lease  between  Nektar  Therapeutics  and  BMR-201 Industrial  Road  LLC, 

dated August 17, 2004, as amended on January 11, 2005 and July 19, 2007

10.31 

(21)  Settlement Agreement and General Release, dated June 30, 2006, by and between The Board of Trustees of the 
University  of  Alabama,  The  University  of  Alabama  in  Huntsville,  Nektar  Therapeutics  AL  Corporation  (a 
wholly-owned subsidiary of Nektar Therapeutics), Nektar Therapeutics and J. Milton Harris 

10.32 

(15)  Co-Development,  License  and  Co-Promotion  Agreement,  dated  August  1,  2007,  between  Nektar  Therapeutics 

(and its subsidiaries) and Bayer Healthcare LLC+

10.33 

(16)  Termination Agreement and Mutual Release, dated November 9, 2007, between Nektar Therapeutics and Pfizer 

Inc.+ 

10.34 

(23)  Exclusive Research, Development, License and Manufacturing and Supply Agreement, by and among Nektar AL 

Corporation, Baxter Healthcare SA, and Baxter Healthcare Corporation, dated September 26, 2005, as amended+

10.35 

(23)  Exclusive License Agreement, dated December 31, 2008, between Nektar Therapeutics, a Delaware corporation, 

and Novartis Pharma AG, a Swiss corporation+

99 

 
 
21.1 

23.1 

24 

31.1 

31.2 

(23)  Subsidiaries of Nektar Therapeutics

(23)  Consent of Independent Registered Public Accounting Firm

Power of Attorney (reference is made to the signature page)

(23)  Certification of Nektar Therapeutics’ principal executive officer required by Rule 13a-14(a) or Rule 15d-14(a)

(23)  Certification of Nektar Therapeutics’ principal financial officer required by Rule 13a-14(a) or Rule 15d-14(a)

32.1* 

(23)  Section 1350 Certifications 

____________ 

+   Confidential  treatment  with  respect  to  specific  portions  of  this  Exhibit  has  been  requested,  and  such  portions  are  omitted  and 

have been filed separately with the SEC. 

++  Management contract or compensatory plan or arrangement.

* 

Exhibit 32.1 is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act 
of 1934, as amended, or otherwise subject to the liability of that section, nor shall such exhibit be deemed to be incorporated by 
reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Securities 
Exchange Act, except as otherwise stated in such filing.

(1) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 1998. 

(2) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2000. 

(3) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on June 4, 2001.

(4) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on January 8, 2002.

(5) 

Incorporated  by  reference  to  the  indicated  exhibit  in  Nektar  Therapeutics’  Current  Report  on  Form  8-K,  filed  on  January  23, 
2003. 

(6) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on December 12, 
2007. 

(7) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on September 28, 
2005. 

(8) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 
June 30, 1996. 

(9) 

Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Registration Statement on Form S-8 (No. 333-98321), 
filed on August 19, 2002. 

(10)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

June 30, 2004. 

(11)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Registration Statement on Form S-8 (No. 333-71936), 

filed on October 19, 2001, as amended. 

(12)  Incorporated  by  reference  to  the  indicated  exhibit  in  Nektar Therapeutics’  Annual  Report  on  Form  10-K,  as  amended,  for  the 

year ended December 31, 2005. 

(13)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on June 7, 2006. 

100 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(14)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2000. 

(15)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2007. 

(16)  Incorporated  by  reference  to  the  indicated  exhibit  in  Nektar  Therapeutics’  Annual  Report  on  Form  10-K  for  the  year  ended 

December 31, 2007. 

(17)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K/A, filed on March 16, 

2006. 

(18)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

September 30, 2006. 

(19)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on November 21, 

2008. 

(20)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Current Report on Form 8-K, filed on January 2, 2009. 

(21)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

June 30, 2006. 

(22)  Incorporated by reference to the indicated exhibit in Nektar Therapeutics’ Quarterly Report on Form 10-Q for the quarter ended 

March 31, 2008. 

(23)  Filed herewith.  

101 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.1 

I, Howard W. Robin, certify that:  

CERTIFICATIONS 

1. I have reviewed this Annual Report on Form 10-K of Nektar Therapeutics for the year ended December 31, 2008; 

2.  Based on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact 
necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with 
respect to the period covered by this report; 

3. Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all 
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in 
this report; 

4.  The  registrant’s  other  certifying  officer(s)  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in 
Exchange Act rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under 
my  supervision,  to  ensure  that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made 
known to us by others within those entities, particularly during the period in which this report is being prepared; 

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial  reporting  to  be 
designed under my supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation 
of financial statements for external purposes in accordance with generally accepted accounting principles; 

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions 
about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such 
evaluation; and 

d)  Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the 
registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an  annual  report)  that  has  materially 
affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting. 

5.  The  registrant’s  other  certifying  officer(s)  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the 
equivalent functions): 

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting 
which  are  reasonably  likely  to  adversely  affect  the  registrant’s  ability  to  record,  process,  summarize  and  report  financial 
information; and 

b)  Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the 

registrant’s internal control over financial reporting. 

Date: March 6, 2009 

/s/ HOWARD W. ROBIN   

  Howard W. Robin  

Chief Executive Officer, President and Director 

102 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2 

I, John Nicholson, certify that:  

CERTIFICATIONS 

1. I have reviewed this Annual Report on Form 10-K of Nektar Therapeutics for the year ended December 31, 2008; 

2.  Based on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact 
necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with 
respect to the period covered by this report; 

3. Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all 
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in 
this report; 

4.  The  registrant’s  other  certifying  officer(s)  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in 
Exchange Act rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under 
my  supervision,  to  ensure  that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made 
known to us by others within those entities, particularly during the period in which this report is being prepared; 

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial  reporting  to  be 
designed under my supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation 
of financial statements for external purposes in accordance with generally accepted accounting principles; 

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions 
about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such 
evaluation; and 

d)  Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the 
registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an  annual  report)  that  has  materially 
affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting. 

5.  The  registrant’s  other  certifying  officer(s)  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the 
equivalent functions): 

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting 
which  are  reasonably  likely  to  adversely  affect  the  registrant’s  ability  to  record,  process,  summarize  and  report  financial 
information; and 

b)  Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the 

registrant’s internal control over financial reporting. 

Date: March 6, 2009 

/s/ JOHN NICHOLSON  
John Nicholson  
Senior Vice President and Chief Financial Officer 

103 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SECTION 1350 CERTIFICATIONS* 

Exhibit 32.1 

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), 
and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. § 1350), Howard W. Robin, Chief Executive Officer, 
President  and  Director  of  Nektar  Therapeutics  (the  “Company”),  and  John  Nicholson,  Senior  Vice  President  and  Chief  Financial 
Officer of the Company, each hereby certifies that, to the best of his knowledge: 

1. The Company’s Annual Report on Form 10-K, for the year ended December 31, 2008, to which this Certification is attached 
as Exhibit 32.1 (the “Annual Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange 
Act of 1934, as amended; and 

2. The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of 

operations of the Company for the period covered by the Annual Report. 

Dated: March 6, 2009 

/s/ HOWARD W. ROBIN 
Howard W. Robin 
Chief Executive Officer, President and Director 

/s/ JOHN NICHOLSON
John Nicholson
Senior Vice President and Chief Financial Officer

*  This certification accompanies the Annual Report on Form 10-K, to which it relates, is not deemed filed with the Securities and 
Exchange Commission and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, 
as  amended,  or  the  Securities  Exchange  Act  of  1934,  as  amended  (whether  made  before  or  after  the  date  of  the  Form  10-K), 
irrespective of any general incorporation language contained in such filing. 

104 

 
 
 
 
 
 
 
 
 
Exhibit 32.1

n e K TAR  MAn AG e M e n T T eA M

Co R p oR ATe  I n F o R MATI on

SECTION 1350 CERTIFICATIONS*

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”),
and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. § 1350), Howard W. Robin, Chief Executive Officer,
President  and  Director  of  Nektar  Therapeutics  (the  “Company”),  and  John  Nicholson,  Senior  Vice  President  and  Chief  Financial 
Officer of the Company, each hereby certifies that, to the best of his knowledge: 

1. The Company’s Annual Report on Form 10-K, for the year ended December 31, 2008, to which this Certification is attached 
as Exhibit 32.1 (the “Annual Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange
Act of 1934, as amended; and 

2. The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of 

operations of the Company for the period covered by the Annual Report. 

Dated: March 6, 2009 

/s/ HOWARD W. ROBIN
Howard W. Robin
Chief Executive Officer, President and Director

/s/ JOHN NICHOLSON
John Nicholson
Senior Vice President and Chief Financial Officer

*  This certification accompanies the Annual Report on Form 10-K, to which it relates, is not deemed filed with the Securities and 
Exchange Commission and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933,
as  amended,  or  the  Securities  Exchange  Act  of  1934,  as  amended  (whether  made  before  or  after  the  date  of  the  Form  10-K), 
irrespective of any general incorporation language contained in such filing. 

104 

Howard W. Robin 
President and Chief Executive Officer 

Bharatt M. Chowrira, ph.D., J.D. 
Senior Vice President and Chief Operating Officer 

Rinko Ghosh 
Senior Vice President, Business  
Development & Alliance Management 

Gil M. Labrucherie 
Senior Vice President, General Counsel and Secretary 

Randall W. Moreadith, M.D., ph.D. 
Senior Vice President, Drug Development  
and Chief Development Officer 

John nicholson 
Senior Vice President and Chief Financial Officer 

Timothy A. Riley, ph.D. 
Senior Vice President, Global Research 

Dorian Rinella 
Senior Vice President, Human Resources 
and Facilities 

Jillian B. Thomsen 
Vice President, Finance and Chief Accounting Officer 

n e K TAR  B oA R D  oF  D I R e CToR S

Robert B. Chess 
Chairman of the Board, Nektar Therapeutics and  
Chairman and CEO, NanOasis Technologies, Inc. 

Michael A. Brown 
Chairman, Line 6 and Former Chairman,  
Quantum Corporation 

Hoyoung Huh, M.D., ph.D. 
President and CEO, BiPar Sciences 

Joseph J. Krivulka 
Founder and President, Triax Pharmaceuticals 

Christopher A. Kuebler 
Former Chairman, Covance Inc. 

Lutz Lingnau 
Former Executive Board Member, Schering AG 

Howard W. Robin 
President and Chief Executive Officer,  
Nektar Therapeutics 

Susan Wang 
Former CFO, Solectron 

Roy A. Whitfield 
Former Chairman, Incyte Genomics, Inc. 

Corporate Headquarters

Nektar Therapeutics 
201 Industrial Road 
San Carlos, CA 94070-6256 
Telephone (650) 631-3100
Facsimile (650) 631-3150

Annual Report on Form 10-K

Copies of Nektar’s Annual Report on Form10-K, 
exclusive of exhibits, are available without charge  
upon written request to:

Investor Relations 
201 Industrial Road 
San Carlos, CA 94070-6256

Or via email to: 
investors@nektar.com; online copies can also be  
obtained at www.nektar.com under “Investor Relations.”

Annual Meeting

The Annual Meeting of Stockholders will be held on  
June 11, 2009, 2:00-3:00 p.m. (PDT) 
The Marriott Hotel  
1700 South Amphlett Blvd. 
San Mateo, CA 94402

Corporate Counsel

O’Melveny & Myers LLP, Menlo Park, CA

Independent Auditors

Ernst & Young LLP, San Jose, CA

Transfer Agent and  
Shareholder Relations

Mellon Investor Services, LLC 
525 Market Street, Suite 3500 
San Francisco, CA 94105
Telephone (877) 290-2261

The preceding discussion in this annual report contains 
forward-looking statements within the meaning of Section 
27A  of  the  Securities  Act  of  1933,  as  amended,  and 
Section 21E of the Securities Exchange Act of 1934, as 
amended.  Nektar  cautions  that  these  forward-looking 
statements are subject to significant risks and uncertain-
ties that may cause results to differ from those indicated 
in  the  forward-looking  statements.  Factors  that  could 
cause or contribute to such differences include, but are 
not limited to, those discussed in Part 1 of the Form 10-K 
included herein and filed with the Securities and Exchange 
Commission  for  the  fiscal  year  ended  December  31, 
2008 under the heading “Risk Factors.” Nektar undertakes 
no  obligation  to  update  forward-looking  statements, 
whether as a result of new information, future events 
or otherwise.

 
Nektar Therapeutics
201 Industrial Road
San Carlos, CA 94070  USA
+1 650.631.3100 Global Headquarters
www.nektar.com
NASDAQ: NKTR